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List of largest stars

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Not to be confused withList of most massive stars.

Below arelists of the largest stars currently known, ordered byradius and separated into categories by galaxy. The unit of measurement used is theradius of the Sun (approximately 695,700 km; 432,300 mi).[1]

TheSun, the orbit ofEarth,Jupiter, andNeptune, compared to four stars (Pistol Star,Rho Cassiopeiae,Betelgeuse, andVY Canis Majoris)

Overview

Although red supergiants are often considered the largest stars, some other star types have been found to temporarily increase significantly in radius, such as duringLBV eruptions orluminous red novae. Luminous red novae appear to expand extremely rapidly, reaching thousands to tens of thousands of solar radii within only a few months, significantly larger than the largest red supergiants.[2]

Some studies use models that predict high-accretingPopulation III orPopulation I supermassive stars (SMSs) in thevery early universe could have evolved "red supergiant protostars". These protostars are thought to have accretion rates larger than the rate of contraction, resulting in lower temperatures but with radii reaching up to many tens of thousands ofR☉, comparable to some of thelargest known black holes.[3][4][5]

Angular diameters

The angular diameters of stars can be measured directly usingstellar interferometry. Other methods can use lunaroccultations or fromeclipsing binaries, which can be used to test indirect methods of finding stellar radii. Only a fewsupergiants can be occulted by the Moon, includingAntares and119 Tauri. Examples of eclipsing binaries areEpsilon Aurigae (Almaaz),VV Cephei, andV766 Centauri (HR 5171). Angular diameter measurements can be inconsistent because the boundary of the very tenuous atmosphere (opacity) differs depending on the wavelength of light in which thestar is observed.[citation needed]

Uncertainties remain with the membership and order of the lists, especially when deriving various parameters used in calculations, such as stellarluminosity andeffective temperature. Often stellar radii can only be expressed as an average or be within a large range of values. Values for stellar radii vary significantly in different sources and for different observation methods.[6]

All the sizes stated in these lists have inaccuracies and may be disputed. The lists are still a work in progress and parameters are prone to change.

Caveats

Various issues exist in determining accurate radii of the largest stars, which in many cases do display significant errors. The following lists are generally based on various considerations or assumptions; these include:

  • Stellar radii or diameters are usually derived only approximately using theStefan–Boltzmann law for the deduced stellarluminosity andeffective surface temperature.
  • Stellar distances, and their errors, for most stars, remain uncertain or poorly determined.
  • Many extended supergiant atmospheres also significantly change in size over time, regularly or irregularly pulsating over several months or years asvariable stars. This makes adoptedluminosities poorly known and may significantly change the quoted radii.
  • Other direct methods for determining stellar radii rely on lunaroccultations or from eclipses in binary systems. This is only possible for a very small number of stars.[7]
  • Many distance estimates for red supergiants come from stellar cluster or association membership, because it is difficult to calculate accurate distances for red supergiants that are not part of any cluster or association.
  • In these lists are some examples of extremely distant extragalactic stars, which may have slightly different properties and natures than the currently largest known stars in theMilky Way. For example, some redsupergiants in theMagellanic Clouds are suspected to have slightly different limitingtemperatures andluminosities. Such stars may exceed accepted limits by undergoing large eruptions or changing theirspectral types over just a few months (or potentially years).[8][9]

Lists

This is adynamic list and may never be able to satisfy particular standards for completeness. You can help byadding missing items withreliable sources.

The following lists show the largest known stars based on the host galaxy.

Milky Way

This list isincomplete; you can help byadding missing items.(January 2016)
List of the largest known stars in the Milky Way
Star nameSolar radius (R☉)Method[a]Notes
Orbit of Saturn2,047–2,049.9[10][b]Reported for reference
Theoretical limit of star size (Milky Way)≳1,700[11]L/TeffEstimated by measuring the fraction of red supergiants at higher luminosities in a large sample of supernova progenitor candidates. Assumes an effective temperature of3,605 K.
Reported for reference
RSGC1-F011,530 ± 370[12]L/Teff
VY Canis Majoris1,420±120[13][14][15]ADAn extreme oxygen-rich red hypergiant that has experienced two dimming periods in the 20th century where the star became dimmer by up to 2.5 magnitudes.[16] Potentially the largest known star.[14] There is a possilbility that this size might be a bit overestimated (on the order of 1 sigma). Hence, the quoted radius might be just an upper limit.[13]
AH Scorpii1,411±124[17][18]AD
RSGC1-F061,380 ± 330[12]L/Teff
S Persei1,364±6[19]AD
VX Sagittarii1,360+250
−230[20] – 1,480+180
−160[18]		ADThe most luminous knownasymptotic giant branch star.[20] Widely recognised as being among the largest known stars.[21]
NML Cygni<1,350+195
−229[c]		ADSurrounding dusty region is very complex making the radius hard to determine.[22]
Stephenson 2 DFK 21,300 ± 300[12]L/TeffAnother red supergiant,Stephenson 2 DFK 1 has an estimated radius of 2,150 R☉. However, it is potentially not a member of theStephenson 2 cluster and also has a distance with an uncertainty of ≳50% due to it only being measured with radial velocities.[12][24]
Stephenson 2 DFK 491,300 ± 300[12]L/TeffA K-type star similar to the yellow hypergiantIRC +10420 that has left its red supergiant stage.[12]
HD 143183(V558 Normae)1,261[25]L/Teff
PZ Cassiopeiae1,259 – 1,336,[26]1,585+160
−120[27]		L/Teff & AD
μ Cephei(Herschel's Garnet Star)1,259[28] – 1,426+282
−119[d] or ~RBetelgeuse		L/Teff & ADWidely recognised as being among the largest known stars.[21] Might be the largest star visible to the naked eye.[30] The higher radii estimate assume Mu Cephei is in the Cepheus OB2OB association.[28][31] Other sources suggest Mu Cephei andBetelgeuse are likely similar in properties.[32][29] If so, Mu Cephei's radius would be comparable to that of Betelgeuse, which is between 650 and 800 R☉.
RSGC1-F101,250 ± 290[12]L/Teff
V354 Cephei1,245[25]L/Teff
Westerlund 1 W237(Westerlund 1 BKS B)1,241±70[33]L/Teff
ST Cephei1,218[25]L/Teff
IRC -10414~1,200[34]L/Teff
RSGC1-F051,200 ± 300[12]L/Teff
V517 Monocerotis1,196+80
−159[35]		L/Teff
GCIRS 71,170±60,[36] 1,359,[37]1,368[38]AD & L/Teff
Westerlund 1 W26(Westerlund 1 BKS AS)1,165±58–1,221±120[33]L/Teff
EV Carinae1,165[39]L/Teff
[A72c] 161,157[25]L/Teff
WY Velorum A1,157[25]L/TeffA symbiotic binary.[40]
RSGC1-F021,130 ± 260[12]L/Teff
Orbit of Jupiter1,114.5–1,115.8[10][b]Reported for reference
V582 Cassiopeiae1,111[25]L/Teff
RW Cygni1,103+251
−177[41]		AD
RW Cephei1,100±40[42]ADA K-type hypergiant star that experienced a "great dimming" event in 2022, similar to Betelgeuse.
RSGC1-F081,100 ± 300[12]L/Teff
RT Carinae1,090[43]L/Teff
RSGC1-F041,082,[44] 1,100,[45]1,400+300
−400[12]		L/Teff
UU Persei1,079+9
−8[35]		L/Teff
LL Pegasi1,070[46]L/Teff
HD 1265771,066+9
−32[35]		L/Teff
V766 Centauri Aa1,060–1,160[47]?V766 Centauri Aa is a rare variableyellow hypergiant.
HaroChavira 11,058[48]L/Teff
CM Velorum1,048[25] – 1,416.24+0.40
−0.96[35]		L/Teff
AG Camelopardalis1,048[25]L/Teff
SU Persei [pt]1,044+31
−21 – 1,139+34
−23,[19]		AD
SW Cephei1,035+75
−120[27]		AD
KY Cygni1,032[48]L/Teff
BC Cygni1,031[48] – 1,187+34
−37[35]		L/TeffA more detailed but older study gives values of1,081R☉ (856–1,375) for the year 2000, and1,303R☉ (1,021–1,553) for the year 1900.[49]
MY Cephei1,028 ± 169 – 1,138 ± 387[50][e]L/Teff
V346 Puppis1,025[51]L/Teff
V530 Cassiopeiae1,017[25]L/Teff
V602 Carinae1,015[52]AD
VV Cephei A1,015[53]ADA red supergiant star orbited by a smallerB-type main-sequence star with a radius estimated between 13[54] and 25 R☉.[55] Widely recognised as being among the largest known stars.[21] Another estimate give a radius of 660 R☉[25] based on the Gaia DR3 distance of 1 kpc.[35]
U Lacertae A1,013[25]L/Teff
KW Sagittarii1,009±142[17][18]AD
Ve 4-641,007[25]L/Teff
V349 Carinae1,002+12
−74[35]		L/Teff
RSGC1-F071,000 ± 200[12]L/Teff
RSGC1-F091,000 ± 200[12]L/Teff
RSGC1-F111,000 ± 200[12]L/Teff
RSGC1-F131,000 ± 200[12]L/Teff
V674 Cephei999[25]L/Teff
CZ Hydrae990[56]L/Teff
IRAS 18111-2257~990 – 1,200[57]L/TeffEstimated based on the bolometric luminosity (14,000–20,000 L☉) and assumed effective temperature of 2,000 K. Another period-luminosity-derived luminosity for this star results in a radius of 1,730 R☉.[57]
CIT 11982[25]L/Teff
V381 Cephei Aa977[25]L/Teff
MSX6C G086.5890–00.7718(975+175
−183 – 1,035+186
−158)[58] – 1,196.91+6.31
−6.35[35]		L/TeffLower values based on the Gaia DR3 effective temperature and the luminosity of Levesque et al. (2005) and that of Messineo & Brown (2019). Higher value based on the GSP Phot-Aeneas library using BR/RP spectra in Gaia DR3.
Stephenson 2 DFK 3970 ± 210[12]L/Teff
V3953 Sagittarii(IRC −30398)970[59]L/Teff
V396 Centauri965[25]L/Teff
UW Aquilae964[25]L/Teff
RSGC1-F12950 ± 230[12]L/Teff
RSGC1-F03940 ± 200[12]L/Teff
V398 Cassiopeiae(HD 240275)941[25]L/Teff
IRC +60342940[25]L/Teff
ψ1 Aurigae934[25]L/Teff
GX Monocerotis931[59]L/Teff
V645 Cephei920[25]L/Teff
S Cassiopeiae920[59]L/TeffOne of thecoolest known stars, at aneffective temperature of1800 K (1500 °C).
NV Aurigae(IRC +50137)918[59]L/Teff
Stephenson 2 DFK 5910 ± 180[12]L/Teff
UY Scuti909[25]L/Teff
NR Vulpeculae908[25] – 923+62
−50[27]		L/Teff
KU Andromedae(IRC +40004)900[60] – 1,040[59]L/Teff
V774 Sagittarii889[25]L/Teff
V923 Centauri881[25]L/Teff
IRAS 20341+4047880[25]L/Teff
IRAS 17418−2713880[61]L/Teff
V540 Sagittarii880[25]L/Teff
V386 Cephei879[25]L/Teff
Trumpler 27-1(CD-33 12241)876+5
−12[35]		?
T Lyrae880[59]L/Teff
TYC 3996-552-2870[25]L/Teff
V1417 Aquilae900[62]L/Teff
V1300 Aquilae(IRC −10529)860[60] – 1,100[59]L/Teff
Westerlund 1 W20(Westerlund 1 BKS D)858±48[33]L/Teff
FX Serpentis857[51]L/Teff
AZ Cygni856+20
−14 – 927+21
−15[19]		ADEstimated based on data from theCHARA array. Another radii of890+21
−15 R☉ (2014),895+21
−15 R☉ (2015) and890+21
−15 R☉ (2016) are calculated based on the same data.[19]
V348 Velorum855[25]L/Teff
BI Cygni852+12
−9 – 908+12
−10[19]		AD
TW Carinae835[25]L/Teff
V358 Cassiopeiae835[25]L/Teff
VLH96 A833[63]L/Teff
DO 26226826[25]L/Teff
HD 155737823[25]L/Teff
6 Geminorum821[19]L/Teff
RW Leonis Minoris820[64] – 1,000[59]L/Teff
HaroChavira 2813[48]L/Teff
HD 300933806[25]L/Teff
[W61c] R 53801[25]L/Teff
RT Ophiuchi801±217[65]AD
HD 95687797[25]L/Teff
BO Carinae790±158[43]L/Teff
HD 62745790[25]L/Teff
WX Piscium790[66] – 1,000[59]L/Teff
VR5–7775 ± 65[67]L/Teff
T Cancri770[51]L/Teff
V Cygni770[62]L/Teff
BD+63 3770[25]L/Teff
CL Carinae770[25]L/Teff
RS Persei770±30,[68]775+110
−85[27]		AD
V355 Cephei770±154[43] – 790[25]L/Teff
BD+63 270769[25]L/Teff
V644 Cephei765[25]L/Teff
BM VIII 11754[25]L/Teff
[SLN74] 2130752[25]L/Teff
IRAS 10176-5802751.2+0.4
−0.6[35] – (793+281
−152–849+172
−133)[58]		L/TeffLower value based on the GSP Phot-Aeneas library using BR/RP spectra in Gaia DR3. Higher values based on the Gaia DR3 effective temperature and the luminosity of Levesque et al. (2005) and that of Messineo & Brown (2019).
HD 303250750±150[43]L/Teff
V384 Persei750[60] – 940[59]L/Teff
V466 Persei750[64]L/Teff
V Coronae Borealis750[60]L/Teff
GY Aquilae748[18] – 920[69]AD
UU Pegasi742±193[65]AD
IM Cassiopeiae740[25]L/Teff
GY Camelopardalis740[60]L/Teff
R Andromedae730[60]L/Teff
RSGC3-S3730 ± 150[12]L/Teff
TT Centauri740[59]L/Teff
Stephenson 2 DFK 10730[12]L/Teff
V1259 Orionis730[56]L/Teff
RSGC3-S15730 ± 140[12]L/Teff
HD 105563 A723[25]L/Teff
Westerlund 1 W75(Westerlund 1 BKS E)722±36[33]L/Teff
AI Volantis720[60]L/Teff
V1111 Ophiuchi(IRC +10365)720[60] – 900[59]L/Teff
XX Persei718+80
−56[27]		AD
RX Telescopii716[25]L/Teff
V Camelopardalis716±185[65]AD
CD-61 3575716[25]L/Teff
S Cephei715[51]L/Teff
AS Cephei713[25]L/Teff
V770 Cassiopeiae(BD+60 299)713[25]L/Teff
AZ Cephei712[25]L/Teff
R Leporis(Hind's Crimson Star)710 – 910[70]AD
MZ Puppis708[25]L/Teff
GP Cassiopeiae707[25] – 771.74+0.23
−0.86[35]		L/Teff
GCIRS 12N703 ± 107[67]L/Teff
V528 Carinae700±140[43]L/Teff
The following well-known stars are listed for the purpose of comparison.
Antares(α Scorpii A)680[71]ADFourteenth brightest star in the night sky.[72] Widely recognised as being among the largest known stars.[21]
Betelgeuse(α Orionis)640,[73]764+116
−62,[74] 782 ± 55[75]		AD & SEISTenth brightest star in the night sky.[72] Widely recognised as being among the largest known stars,[21] radius decreased to ~500 R☉ during the 2020 great dimming event.[76]
R Horologii630[60]L/TeffA red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun.
119 Tauri(CE Tauri, Ruby Star)587 – 593[77]AD
ρ Cassiopeiae564±67 or700±112[78]ADAyellow hypergiant star, similar to V382 Carinae, that is also visible to thenaked eye.
CW Leonis560[79]L/TeffThe nearestcarbon star.
V509 Cassiopeiae511±112[42]ADA variable yellow hypergiant whose size varied from around 680 R☉ in 1950–1970 to 910 R☉ in 1977, and later decreased to 390 R☉ in the 1990s.[80]
V382 Carinae
(x Carinae)		485 ± 56[81]L/TeffAyellow hypergiant, one of the rarest types of stars.
V838 Monocerotis464[82]L/TeffDuring the 2002 Red Nova, the star's radius may have increased up to 3,190 R☉.[83]
Pistol Star(V4647 Sagittarii)420[84]L/TeffOne of the most luminous stars known.
La Superba(Y Canum Venaticorum)344[85]L/Teff
Mira(ο Ceti A)332–402[86]ADPrototype of theMira variables.
Orbit of Mars322–323.1[10][b]Reported for reference
R Doradus298±21[87]ADThe extrasolar star with the largest apparent size.
Rasalgethi(α Herculis A)284±60 (264–303)[88]L/Teff
Cygnus OB2#12246[89]?One of the most massive and luminous stars known.
Orbit of Earth (~1AU)214[10][b]Reported for reference
Suhail(λ Velorum)211±6[90]AD
Wezen(δ Canis Majoris)188[91]L/TeffThirty-sixth brightest star in the night sky.[72]
Enif(ε Pegasi)178[91]L/Teff
Orbit of Venus158.6[10][b]Reported for reference
η Carinae A128 – 742[92]ODDuring the 1843 Great Eruption, the star's radius may have increased up to 4,319–6,032R☉.[93]
Deneb(α Cygni)107[94][f] – 203±17[95]AD & ?Eighteenth brightest star in the night sky.[72]
Orbit of Mercury82.9–84.6[10][b]Reported for reference
Rigel(β Orionis A)74.1+6.1
−7.3[96]		ADSeventh brightest star in the night sky.
Canopus(α Carinae)73.3[97]ADSecond brightest star in the night sky.
Gacrux(γ Crucis)73[98]L/TeffTwenty-sixth brightest star in the night sky.
Polaris(α Ursae Minoris)46.27±0.42[99]ADThe current star in the North Pole. It is aClassical Cepheid variable, and the brightest example of its class.
Aldebaran(α Tauri)45.1±0.1[100]ADFourteenth brightest star in the night sky.
Arcturus(α Boötis)25.4 ± 0.2[101]ADThis is the nearestred giant to the Earth, and the fourth brightest star in the night sky.
Pollux(β Geminorum)9.06 ± 0.03[96]ADThe nearest giant star to the Earth.
Spica(α Virginis A)7.47±0.54[102]One of thenearest supernova candidates and the sixteenth-brightest star in the night sky.
Regulus(α Leonis A)4.16 × 3.14[103]The nearestB-type star to the Earth.
Vega(α Lyrae)2.726±0.006 ×2.418±0.012[104]ADFifth brightest star in the night sky.[72]
Altair(α Aquilae)2.01 × 1.57[105]Twelfth brightest star in the night sky.
Sirius(α Canis Majoris A)1.713[106]ADThe brightest star in the night sky.
Rigil Kentaurus(α Centauri A)1.2175[107]ADThird brightest star in the night sky.
Sun1The largest object in theSolar System.

Magellanic Clouds

List of the largest known stars in the Magellanic Clouds
Star nameSolar radii
(Sun = 1)		GalaxyMethod[a]Notes
Theoretical limit of star size (Large Magellanic Cloud)≳1,550[11]L/TeffEstimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of3,545 K.
Reported for reference
HV 8881,477[108]–1,584[109]Large Magellanic CloudL/Teff
HD 269551 A1,439[110]Large Magellanic CloudL/Teff
HV 124631,420[110]Large Magellanic CloudL/Teff
IRAS 05280–69101,367[111]Large Magellanic CloudL/TeffThe most reddened object in the Large Magellanic Cloud.[109]
MSX LMC 5971,278[112]–1,444[109]Large Magellanic CloudL/Teff
OGLE BRIGHT-LMC-LPV-521,275[110]–1,384[112]Large Magellanic Cloud
HV 28341,253[112]Large Magellanic CloudL/Teff
LMC 1450131,243[110]Large Magellanic CloudL/Teff
IRAS 05346-69491,211[113]Large Magellanic CloudL/TeffIt has an estimated mass-loss rate of 0.0017M☉ (566 Earths) per year, the highest for any star.[113]
HV 56181,163[110]Large Magellanic CloudL/Teff
HV 22421,160[114] – 1,180[110]Large Magellanic CloudL/Teff
LMC 253201,156[110]Large Magellanic CloudL/Teff
SMC 185921,129[110]Small Magellanic CloudL/Teff
MSX SMC 0181,119[113]Small Magellanic CloudL/Teff
LMC2521,117[110]–1,164[112]Large Magellanic Cloud
LMC0451,112[110]Large Magellanic CloudL/Teff
SP77 21-121,103[110]Large Magellanic CloudL/Teff
MSX LMC 8101,104[112]Large Magellanic CloudL/Teff
WOH S3381,100[114]Large Magellanic CloudL/Teff
LMC 1360421,092[110]Large Magellanic CloudL/Teff
LMC 1751881,090[110]–1,317[112]Large Magellanic Cloud
IRAS 04516-69021,085[111]Large Magellanic CloudL/Teff
WOH S2741,071[110]Large Magellanic CloudL/Teff
[W60] D441,063[110]Large Magellanic CloudL/Teff
HV 122331,057[110]Large Magellanic CloudL/Teff
MSX LMC 5891,051[112]Large Magellanic CloudL/Teff
Theoretical limit of star size (Small Magellanic Cloud)≳1,050[11]L/TeffEstimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of3,850 K.
Reported for reference
MSX LMC 9471,050[112]Large Magellanic CloudL/Teff
LMC 1442171,039[110]Large Magellanic Cloud
SP77 31-181,038[110]Large Magellanic CloudL/Teff
IRAS 05402-69561,032[111]Large Magellanic CloudL/Teff
IRAS 04509-69221,027[111]–1,187[112]Large Magellanic CloudL/Teff
HV 22551,027[110]–1,236[112]Large Magellanic Cloud
TRM 361,019[110]Large Magellanic CloudL/Teff
LMC 1755491,005[110]Large Magellanic CloudL/Teff
TRM 891,004[110]–1,526[112]Large Magellanic Cloud
B90 (WOH S264)1000+70
−80 – 1,210[115]		Large Magellanic CloudL/TeffHas an unusually high metallicity and velocity.[115] Often referred to as itsSIMBAD designation [W60] B90.
Discrepancy in radius is caused by a potential underestimation of the effective temperature measured from theTitanium(II) oxide bands.
HV 24501,000+2
−1[116]–1,071[116]		Large Magellanic CloudL/TeffA yellow hypergiant.
LMC 149767994[110]Large Magellanic CloudL/Teff
UCAC2 2674864(HV 2834)990+115
−100[117]		Large Magellanic CloudL/Teff
HV 996988[110]–1,176[112]Large Magellanic Cloud
W61 8–88986[110]Large Magellanic CloudL/Teff
HV 2362982[110] – 1,030[114]Large Magellanic CloudL/Teff
MG73 59979[118]Large Magellanic CloudL/TeffA yellow supergiant.
HD 268757979[118]Large Magellanic CloudL/TeffA G8 yellow hypergiant.
SMC 56389976[110]Small Magellanic CloudL/Teff
LMC 136404974[110]Large Magellanic CloudL/Teff
SP77 46-32973[110]–1,133[112]Large Magellanic Cloud
HV 2084967[110]–1,083[112]Small Magellanic Cloud
WOH S74965[110]–1,014[112]Large Magellanic CloudL/Teff
SMC 10889963[110]Small Magellanic CloudL/Teff
TRM 67951[110]Large Magellanic CloudL/Teff
LHA 120-S 26951[110]Large Magellanic CloudL/Teff
LMC 139413951[110]Large Magellanic CloudL/Teff
TRM 87947[110]Large Magellanic CloudL/Teff
LMC 148035947[110]Large Magellanic CloudL/Teff
HV 12802946[110]–1,377[112]Large Magellanic Cloud
SMC 018136945[110]Small Magellanic CloudL/Teff
LMC 142202943[110]Large Magellanic CloudL/Teff
LMC 147199939[110] – 990[114]Large Magellanic CloudL/Teff
SP77 37-24936[110]Large Magellanic CloudL/Teff
LMC 148381932[110]Large Magellanic CloudL/Teff
LMC 23095926[112] – 1,280[110]Large Magellanic CloudL/Teff
SP77 31-16923±28[116]Large Magellanic CloudL/TeffA yellow hypergiant.
LMC 170452920[110]Large Magellanic CloudL/Teff
SP77 44-5918[110]Large Magellanic CloudL/Teff
LMC 66778915[110] – 990[114]Large Magellanic CloudL/Teff
NGC371 R20913[119]Small Magellanic CloudL/Teff
LMC 150040911[110]Large Magellanic CloudL/Teff
HV 2236911[110]–971[112]Large Magellanic CloudL/Teff
TRM 108906[110]Large Magellanic CloudL/Teff
LMC 169142902[110]Large Magellanic CloudL/Teff
WOH S457902±45[120]Large Magellanic CloudL/Teff
IRAS 04498-6842(LI-LMC 60)898[111] – 1,137[112] – 1,765,[109] 1,224[110]Large Magellanic CloudL/TeffLower value derived from fitting models that assume the star's effective temperature to be 3,400 K. Higher value based on the measured effective temperature from van Loon et al. (2005). A newer paper estimates parameters that would result in a radius of 1,765 R☉.[109]
LMC 135720898[110]Large Magellanic CloudL/Teff
SMC 81961892[110]Small Magellanic CloudL/Teff
SP77 44-19891[110]–1,297[112]Large Magellanic CloudL/Teff
SP77 45–49890[110]Large Magellanic CloudL/Teff
LMC 175464892[112]–982[110]Large Magellanic Cloud
SMC 49478888[110]Small Magellanic CloudL/Teff
HV 12185890+55
−65[117]		Large Magellanic CloudL/Teff
SP77 45–53885[112]–981[110]Large Magellanic Cloud
LMC 170079882[110]Large Magellanic CloudL/Teff
SMC 5092880[110]Small Magellanic CloudL/Teff
HV 12793880+45
−65[117]		Large Magellanic CloudL/Teff
W61 21–22877[110]Large Magellanic CloudL/Teff
SP77 35-1877[110]Large Magellanic CloudL/Teff
UCAC3 43-23216873[110]Large Magellanic CloudL/Teff
HV 11423872[110]Small Magellanic CloudL/Teff
WOH S57875+70
−60[117]		Large Magellanic CloudL/Teff
SP77 53-3870[110]Large Magellanic CloudL/Teff
SP77 36-14870[110]Large Magellanic CloudL/Teff
SP77 31-19870[110]Large Magellanic CloudL/Teff
LMC 158646865[110]Large Magellanic CloudL/Teff
SP77 31-20864[110]Large Magellanic CloudL/Teff
LMC 113364864[110]Large Magellanic CloudL/Teff
SMC 83202864[110]Small Magellanic CloudL/Teff
LMC 175746863[110]Large Magellanic CloudL/Teff
LMC207863[110]Large Magellanic CloudL/Teff
SP77 29-8858[110]Large Magellanic CloudL/Teff
SP77 54-38859[112]–911[110]Large Magellanic Cloud
LMC 174714855[110]–965[112]Large Magellanic Cloud
LMC 176135854[110]Large Magellanic CloudL/Teff
LMC178845[110]Large Magellanic CloudL/Teff
SP77 31-26845[110]Large Magellanic CloudL/Teff
LMC 106201844[110]Large Magellanic CloudL/Teff
SP77 48-13838[110]Large Magellanic CloudL/Teff
MSX LMC 1318837[110]Large Magellanic CloudL/Teff
SP77 28-13835[110]Large Magellanic CloudL/Teff
LMC 143898833[110]Large Magellanic CloudL/Teff
TYC 9161-866-1833[110]Large Magellanic CloudL/Teff
SMC 59803829[110]Small Magellanic CloudL/Teff
LMC 157401828[110]Large Magellanic CloudL/Teff
SP77 39-22828[110]Large Magellanic CloudL/Teff
WOH S52828[110]Large Magellanic CloudL/Teff
SP77 30-22826[110]Large Magellanic CloudL/Teff
LMC 145728826[110]Large Magellanic CloudL/Teff
LMC 169049825[110]Large Magellanic CloudL/Teff
SP77 46-34825[110]Large Magellanic CloudL/Teff
LMC 177997825[112]–867[110]Large Magellanic Cloud
SP77 28-2825±60[117]Large Magellanic CloudL/Teff
SP77 22-9823[110] – 850[114]Large Magellanic CloudL/Teff
Z Doradus824±108[120]–956[112]Large Magellanic CloudL/Teff
WOH S421822[110]–840[112]Large Magellanic Cloud
LMC 72727822[110]Large Magellanic CloudL/Teff
SP77 37-28821[110]Large Magellanic CloudL/Teff
MSX LMC 575816[110]–933[112]Large Magellanic Cloud
LMC 143035815[110]Large Magellanic CloudL/Teff
WOH S49815[110]Large Magellanic CloudL/Teff
SP77 52-28812[110]Large Magellanic CloudL/Teff
SHV 0520422-693821808[110]Large Magellanic CloudL/Teff
HD 268850808[112]–898[110]Large Magellanic Cloud
SMC 20133809[112]–835[110]Small Magellanic Cloud
SMC 25888804[110]Small Magellanic CloudL/Teff
SP77 55-20803[110]Large Magellanic CloudL/Teff
WOH G64 A~800[121]Large Magellanic CloudL/TeffIn asymbiotic binary with a smallerB-type star, WOH G64 B.[121] It was previously estimated to be 1,540[122][117][123][109][124] ± 77[122] R☉ when ared supergiant, which would make it a candidate for the largest known star, but transitioned to ayellow hypergiant after a potential 30 year long outburst.[121]
PGMW 1058800[110]Large Magellanic CloudL/Teff
LMC 145112798[110]Large Magellanic CloudL/Teff
SMC 47757795[110]Small Magellanic CloudL/Teff
LMC 175709794[110]Large Magellanic CloudL/Teff
SMC 46497794[110]Small Magellanic CloudL/Teff
WOH S60789[110]Large Magellanic CloudL/Teff
WOH S102789[110]Large Magellanic CloudL/Teff
LMC 164709787[110]Large Magellanic CloudL/Teff
SP77 31-28787[110]Large Magellanic CloudL/Teff
TRM 73787[112]–816[110]Large Magellanic Cloud
SP77 31-21784[110]Large Magellanic CloudL/Teff
SMC 8930784[110]Small Magellanic CloudL/Teff
PMMR 62784[110]Small Magellanic CloudL/Teff
SP77 46-31782[110]Large Magellanic CloudL/Teff
LMC211780[110]Large Magellanic CloudL/Teff
LMC 140403778[110]Large Magellanic CloudL/Teff
LMC 134383778[110]–803[112]Large Magellanic CloudL/Teff
SP77 47-11778[110]Large Magellanic CloudL/Teff
SP77 40-7778[110] – 810[114]Large Magellanic CloudL/Teff
W61 19–24780+50
−70[117]		Large Magellanic CloudL/Teff
WOH S28780[114]Large Magellanic CloudL/Teff
LMC 141568776[110]Large Magellanic CloudL/Teff
SP77 51-2776[110]Large Magellanic CloudL/Teff
SP77 31–43773[110]Large Magellanic CloudL/Teff
MSX LMC 833773[110]–849[112]Large Magellanic Cloud
SP77 52-32772[110]Large Magellanic CloudL/Teff
SP77 22-10767[110]Large Magellanic CloudL/Teff
SP77 48-6768[125]Large Magellanic CloudL/Teff
SMC 12322765[110]Small Magellanic CloudL/Teff
WOH S517764[110]Large Magellanic CloudL/Teff
WOH S183763[110]Large Magellanic CloudL/Teff
LMC256762[110]Large Magellanic CloudL/Teff
LMC 154311762[110]Large Magellanic CloudL/Teff
LMC 119219762[110]Large Magellanic CloudL/Teff
WOH S452762±275[120]Large Magellanic CloudL/Teff
MSX SMC 024761[112]Large Magellanic CloudL/Teff
WOH S282758[110]Large Magellanic CloudL/Teff
LMC 64048758[110]Large Magellanic CloudL/Teff
PGMW 3160758[110]Large Magellanic CloudL/Teff
WOH S438757±211[120]Large Magellanic CloudL/Teff
LMC 61753755[110]Large Magellanic CloudL/Teff
LMC 140296754[110]Large Magellanic CloudL/Teff
WOH S478753[110]Large Magellanic CloudL/Teff
LMC 139027751[110] – 790[114]Large Magellanic CloudL/Teff
SP77 45-16749[110] – 800[114]Large Magellanic CloudL/Teff
SP77 37-20749[110]Large Magellanic CloudL/Teff
SP77 54-27750[114] – 758[110] – 800[114]Large Magellanic CloudL/Teff
LMC 155529747[110]Large Magellanic CloudL/Teff
LMC 143877746[110]Large Magellanic CloudL/Teff
SMC 64663745[110]Small Magellanic CloudL/Teff
WOH G302745[110]Large Magellanic CloudL/Teff
TRM 65743[110]Large Magellanic CloudL/Teff
HV 12149741[110]–767[112]Small Magellanic Cloud
SMC 50840740[110]Small Magellanic CloudL/Teff
SMC 46662740[110]–874[112]Small Magellanic Cloud
SP77 29-11738[110]Large Magellanic CloudL/Teff
SMC 30616737[110]Small Magellanic CloudL/Teff
LMC 162635736[110]Large Magellanic CloudL/Teff
SP77 39-17736[110] – 760[114]Large Magellanic CloudL/Teff
LMC 163466734[110]Large Magellanic CloudL/Teff
HV 2310734[112]Large Magellanic CloudL/Teff
HD 269723734±17,[116] 814[118]–829[125]Large Magellanic CloudL/TeffAyellow hypergiant.
SP77 44-17732[110]Large Magellanic CloudL/Teff
SP77 38-5a732[110]Large Magellanic CloudL/Teff
LMC 67982730[110]Large Magellanic CloudL/Teff
LHA 120-S 129730[110]Large Magellanic CloudL/Teff
PMMR 64730+75
−65[117]		Small Magellanic CloudL/Teff
SP77 51-15727[110]Large Magellanic CloudL/Teff
LMC 168757725[110]Large Magellanic CloudL/Teff
LMC 163007725[110]Large Magellanic CloudL/Teff
W61 8–14724[110]Large Magellanic CloudL/Teff
IRAS 05425-6914724[110]Large Magellanic CloudL/Teff
SMC 55188724[110]Small Magellanic CloudL/Teff
SP77 44-13721[110]Large Magellanic CloudL/Teff
MSX LMC 905719[110]Large Magellanic CloudL/Teff
LMC 147928719[110]Large Magellanic CloudL/Teff
LH 43-15719[110] – 740[114]Large Magellanic CloudL/Teff
PMMR 116717[125]Small Magellanic CloudL/Teff
LMC 123778715[110]Large Magellanic CloudL/Teff
WOH S314714[110]Large Magellanic CloudL/Teff
SP77 61-23713[110]Large Magellanic CloudL/Teff
WOH S230713[110]Large Magellanic CloudL/Teff
LMC 150396710[110]Large Magellanic CloudL/Teff
SP77 48-17709[110]Large Magellanic CloudL/Teff
LMC 165242707[110]Large Magellanic CloudL/Teff
SP77 51-19707[110]Large Magellanic CloudL/Teff
LMC 170539707[110]Large Magellanic CloudL/Teff
LMC 154729705[110]Large Magellanic CloudL/Teff
OGLE BRIGHT-LMC-LPV-101703[110]Large Magellanic CloudL/Teff
MSX SMC 055702[119]–1,557+215
−130[112]		Small Magellanic CloudL/TeffA super-AGB candidate.
LMC 168290702[110]Large Magellanic CloudL/Teff
LMC180702[110]Large Magellanic CloudL/Teff
SP77 45-2702[110]Large Magellanic CloudL/Teff
SP77 48-6700+29
−28[116]		Large Magellanic CloudL/TeffA yellow hypergiant.
The following well-known stars are listed for the purpose of comparison.
HV 2112675 – 1,193[126]Small Magellanic CloudL/TeffIt has been previously considered to be a possibleThorne–Żytkow object.[126]
HV 11417673[112]–798[110]Small Magellanic CloudL/TeffCandidate Thorne-Zytkow object.[126]
HD 269953647[118]–720[125]Large Magellanic CloudL/TeffA yellow hypergiant.
HD 271182621[127]Large Magellanic CloudL/TeffA yellow hypergiant.
HD 33579471[125]Large Magellanic CloudL/TeffThe brightest star in the Large Magellanic Cloud.
S Doradus100[128]Large Magellanic CloudL/TeffAluminous blue variable in the S Doradus instability strip.
HD 3797499[129]Large Magellanic CloudL/TeffAn unusual bluehypergiant with a large dusty disk.[129]
R136a142.7+1.6
−0.9[130]		Large Magellanic CloudL/TeffOne of themost luminous andmost massive stars.
BAT 99-9837.5[131]Large Magellanic CloudL/TeffOne of the most luminous and most massive stars.
HD 5980 A24[132]Small Magellanic CloudL/TeffA luminous blue variable and one of the most luminous stars.

Andromeda (M31) and Triangulum (M33) galaxies

List of the largest known stars in Andromeda and Triangulum galaxies
Star nameSolar radii
(Sun = 1)		GalaxyMethod[a]Notes
Theoretical limit of star size (Andromeda Galaxy)≳1,750[11]L/TeffEstimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of3,625 K.
Reported for reference
Theoretical limit of star size (Triangulum Galaxy)≳1,500[11]L/TeffEstimated by measuring the fraction of red supergiants at higher luminosities in a large sample of stars. Assumes an effective temperature of3,605 K.
Reported for reference
LGGS J004428.48+415130.91,410[133]Andromeda GalaxyL/Teff
LGGS J013418.56+303808.61,363[134]Triangulum GalaxyL/Teff
LGGS J013414.27+303417.71,342[134]–1,479[110]Triangulum GalaxyL/Teff
LGGS J004514.91+413735.01,324[110]Andromeda GalaxyL/Teff
LGGS J004125.23+411208.91,302[110]Andromeda GalaxyL/Teff
LGGS J013350.62+303230.31,283[110]Triangulum GalaxyL/Teff
LGGS J004312.43+413747.11,279[110]Andromeda GalaxyL/Teff
LGGS J003951.33+405303.71,272[110]Andromeda GalaxyL/Teff
LGGS J013416.52+305155.41,227[110]Triangulum GalaxyL/Teff
LGGS J004416.83+411933.21,209[110]Andromeda GalaxyL/Teff
LGGS J004531.13+414825.71,201[110]Andromeda GalaxyL/Teff
2MASS J01343365+30465471,196[110]Triangulum GalaxyL/Teff
LGGS J013409.63+303907.61,182[110]Triangulum GalaxyL/Teff
LGGS J004133.18+411217.21,180[110]Andromeda GalaxyL/Teff
LGGS J004455.90+413035.21,172[110]Andromeda GalaxyL/Teff
LGGS J013352.96+303816.01,163[110]Andromeda GalaxyL/Teff
LGGS J004047.22+404445.51,162[110]Andromeda GalaxyL/Teff
LGGS J004254.18+414033.61,154[110]Andromeda GalaxyL/Teff
LGGS J004428.48+415130.91,130[110]Andromeda GalaxyL/Teff
LGGS J013414.27+303417.71,129[134]Triangulum GalaxyL/Teff
LGGS J004035.08+404522.31,122[110]Andromeda GalaxyL/Teff
LGGS J013341.98+302102.01,119[110]Triangulum GalaxyL/Teff
LGGS J013307.37+304543.21,119[110]Triangulum GalaxyL/Teff
LGGS J004218.33+412633.91,111[110]Andromeda GalaxyL/Teff
LGGS J004102.54+403426.51,108[110]Andromeda GalaxyL/Teff
LGGS J013335.90+303344.51,104[110]Triangulum GalaxyL/Teff
LGGS J013358.54+303419.91,103[110]Triangulum GalaxyL/Teff
LGGS J013414.49+303511.61,102[110]Triangulum GalaxyL/Teff
LGGS J013336.64+303532.31,102[110]–1,408[134]Triangulum GalaxyL/Teff
LGGS J004259.34+413726.01,094[110]Andromeda GalaxyL/Teff
LGGS J004509.98+414627.51,089[110]Andromeda GalaxyL/Teff
LGGS J013241.94+302047.51,083[110]Triangulum GalaxyL/Teff
LGGS J004034.74+404459.61,078[110]Andromeda GalaxyL/Teff
LGGS J004059.50+404542.61,071[110]Andromeda GalaxyL/Teff
LGGS J013430.75+303218.81,067[110]Triangulum GalaxyL/Teff
LGGS J013412.27+305314.11,063[110]–1,066[134]Triangulum GalaxyL/Teff
LGGS J013328.17+304741.51,063[110]Triangulum GalaxyL/Teff
LGGS J004524.97+420727.21,059[110]Andromeda GalaxyL/Teff
LGGS J013233.77+302718.81,058[110]–1,129[134]Triangulum GalaxyL/Teff
LGGS J004125.72+411212.71,058[110]Andromeda GalaxyL/Teff
LGGS J004114.18+403759.81,058[110]Andromeda GalaxyL/Teff
LGGS J013307.60+304259.01,051[110]Triangulum GalaxyL/Teff
LGGS J004103.67+410211.81,047[110]Andromeda GalaxyL/Teff
LGGS J013305.48+303138.51,046[110]Triangulum GalaxyL/Teff
LGGS J004442.41+412649.51,040[110]Andromeda GalaxyL/Teff
LGGS J013403.87+303753.21,040[110]Triangulum GalaxyL/Teff
LGGS J013351.47+303640.31,034[110]Triangulum GalaxyL/Teff
LGGS J004306.62+413806.21,028[110]Andromeda GalaxyL/Teff
LGGS J013303.54+303201.21,027[110]–1,131[134]Triangulum GalaxyL/Teff
LGGS J004234.41+405855.91,023[110]Andromeda GalaxyL/Teff
LGGS J004051.31+404421.71,022[110]Andromeda GalaxyL/Teff
LGGS J004031.00+404311.11,011[110]Andromeda GalaxyL/Teff
LGGS J013406.20+303913.61,009[110]Triangulum GalaxyL/Teff
LGGS J013344.10+304425.11,007[110]Triangulum GalaxyL/Teff
LGGS J004307.36+405852.21,007[110]Andromeda GalaxyL/Teff
LGGS J013407.13+303929.5994[110]Triangulum GalaxyL/Teff
LGGS J013312.35+303033.9993[110]Triangulum GalaxyL/Teff
LGGS J013330.05+303145.9988[110]Triangulum GalaxyL/Teff
LGGS J013350.84+304403.1984[110]Triangulum GalaxyL/Teff
LGGS J013329.47+301848.3981[110]Triangulum GalaxyL/Teff
LGGS J004148.74+410843.0981[110]Andromeda GalaxyL/Teff
LGGS J004415.76+411750.7977[110]Andromeda GalaxyL/Teff
LGGS J004127.44+411240.7977[110]Andromeda GalaxyL/Teff
LGGS J013312.75+303946.1975[110]Triangulum GalaxyL/Teff
LGGS J004027.36+410444.9973[110]Andromeda GalaxyL/Teff
LGGS J013434.35+302627.3973[110]Triangulum GalaxyL/Teff
LGGS J013423.29+305655.0993[110]–972[134]Triangulum GalaxyL/Teff
LGGS J013319.13+303642.5970[110]Triangulum GalaxyL/Teff
LGGS J004305.77+410742.5969[110]Andromeda GalaxyL/Teff
LGGS J013403.73+304202.4965[110]–1,032[134]Triangulum GalaxyL/Teff
LGGS J004346.10+411138.8962[110]Andromeda GalaxyL/Teff
LGGS J004419.20+412343.7959[110]Andromeda GalaxyL/Teff
LGGS J013353.91+302641.8959[110]–1,008[134]Triangulum GalaxyL/Teff
LGGS J013315.23+305329.0958[110]Triangulum GalaxyL/Teff
LGGS J013315.23+305329.0956[134]Triangulum GalaxyL/Teff
LGGS J004138.35+412320.7954[110]Andromeda GalaxyL/Teff
LGGS J004419.45+411749.5950[110]Andromeda GalaxyL/Teff
LGGS J013413.95+303339.6948[110]Triangulum GalaxyL/Teff
LGGS J013336.42+303530.9947[110]Triangulum GalaxyL/Teff
LGGS J004047.82+410936.4943[110]Andromeda GalaxyL/Teff
LGGS J013258.18+303606.3943[110]Triangulum GalaxyL/Teff
LGGS J004447.74+413050.0938[110]Andromeda GalaxyL/Teff
2MASS J01343131+3046088938[110]Triangulum GalaxyL/Teff
LGGS J004346.18+411515.0936[110]Andromeda GalaxyL/Teff
LGGS J004304.62+410348.4936[110]Andromeda GalaxyL/Teff
LGGS J004458.28+413154.3933[110]Andromeda GalaxyL/Teff
LGGS J004102.82+410422.3933[110]Andromeda GalaxyL/Teff
LGGS J013344.33+303636.0932[110]Triangulum GalaxyL/Teff
LGGS J004631.49+421133.1932[110]Andromeda GalaxyL/Teff
LGGS J013321.44+304045.4932[110]–1,015[134]Triangulum GalaxyL/Teff
LGGS J013358.04+304900.1931[110]Triangulum GalaxyL/Teff
LGGS J013314.31+302952.91,067[110]–930[134]Triangulum GalaxyL/Teff
LGGS J013315.97+303153.7929[110]Triangulum GalaxyL/Teff
LGGS J004126.14+403346.5927[110]Andromeda GalaxyL/Teff
LGGS J004347.31+411203.6925[110]Andromeda GalaxyL/Teff
LGGS J004252.78+405627.5923[110]Andromeda GalaxyL/Teff
LGGS J013411.54+303312.6918[110]Triangulum GalaxyL/Teff
LGGS J013357.08+303817.8918[110]Triangulum GalaxyL/Teff
LGGS J003943.89+402104.6917[110]Andromeda GalaxyL/Teff
LGGS J004503.35+413026.3916[110]Andromeda GalaxyL/Teff
LGGS J013338.97+303828.9915[110]Triangulum GalaxyL/Teff
LGGS J013330.27+303510.6915[110]Triangulum GalaxyL/Teff
LGGS J004033.06+404303.1912[110]Andromeda GalaxyL/Teff
LGGS J004357.15+411136.6911[110]Andromeda GalaxyL/Teff
LGGS J004406.60+411536.6911[110]Andromeda GalaxyL/Teff
LGGS J013312.38+302453.2911[110]–952[134]Triangulum GalaxyL/Teff
LGGS J004451.76+420006.0911[110]Andromeda GalaxyL/Teff
LGGS J013322.82+301910.9934[110]–911[134]Triangulum GalaxyL/Teff
LGGS J013355.56+304120.9908[110]Triangulum GalaxyL/Teff
LGGS J004034.40+403627.4907[110]Andromeda GalaxyL/Teff
LGGS J003910.56+402545.6906[110]Andromeda GalaxyL/Teff
LGGS J004142.43+411814.1906[110]Andromeda GalaxyL/Teff
LGGS J013316.57+303051.9902[110]Triangulum GalaxyL/Teff
LGGS J013245.59+303518.7900[110]Triangulum GalaxyL/Teff
LGGS J004034.67+404322.5898[110]Andromeda GalaxyL/Teff
LGGS J004027.65+405126.7898[110]Andromeda GalaxyL/Teff
LGGS J004322.75+411101.8895[110]Andromeda GalaxyL/Teff
LGGS J004116.47+410813.7895[110]Andromeda GalaxyL/Teff
LGGS J013306.33+303208.2894[110]Triangulum GalaxyL/Teff
LGGS J004039.12+404252.3894[110]Andromeda GalaxyL/Teff
LGGS J004433.96+415414.8893[110]Andromeda GalaxyL/Teff
LGGS J013454.31+304109.8891[134]Triangulum GalaxyL/Teff
LGGS J004030.64+404246.2890[110]Andromeda GalaxyL/Teff
LGGS J004252.67+413615.2889[110]Andromeda GalaxyL/Teff
LGGS J013349.94+302928.8888[110]Triangulum GalaxyL/Teff
2MASS J01335010+3039106886[110]Triangulum GalaxyL/Teff
LGGS J013357.37+304558.7886[110]Triangulum GalaxyL/Teff
LGGS J013338.77+303532.9885[110]Triangulum GalaxyL/Teff
LGGS J013359.20+303212.1884[110]Triangulum GalaxyL/Teff
LGGS J013340.42+303131.3880[110]Triangulum GalaxyL/Teff
LGGS J004511.40+413717.8880[110]Andromeda GalaxyL/Teff
LGGS J013352.16+303902.2880[110]Triangulum GalaxyL/Teff
LGGS J004219.25+405116.4880[110]Andromeda GalaxyL/Teff
LGGS J004331.90+411145.0880[110]Andromeda GalaxyL/Teff
2MASS J01333718+3038206879[110]Triangulum GalaxyL/Teff
LGGS J013415.42+302816.4876[110]Triangulum GalaxyL/Teff
LGGS J013345.01+302105.1876[110]Triangulum GalaxyL/Teff
LGGS J004107.23+411636.8870[110]Andromeda GalaxyL/Teff
LGGS J013417.83+303356.0867[110]Triangulum GalaxyL/Teff
LGGS J004120.25+403838.1867[110]Andromeda GalaxyL/Teff
LGGS J004402.38+412114.9866[110]Andromeda GalaxyL/Teff
2MASS J01334194+3038565866[110]Triangulum GalaxyL/Teff
LGGS J013309.10+303017.8865[110]–933[134]Triangulum GalaxyL/Teff
LGGS J004429.36+412307.8862[110]Andromeda GalaxyL/Teff
LGGS J013310.20+303314.4861[110]Triangulum GalaxyL/Teff
LGGS J004404.60+412729.8860[110]Andromeda GalaxyL/Teff
LGGS J003907.69+402859.5860[110]Andromeda GalaxyL/Teff
LGGS J004219.64+412736.1859[110]Andromeda GalaxyL/Teff
LGGS J003949.31+402049.1859[110]Andromeda GalaxyL/Teff
LGGS J013310.16+302726.3855[110]Triangulum GalaxyL/Teff
LGGS J004036.97+403412.4855[110]Andromeda GalaxyL/Teff
LGGS J013343.68+304450.7855[110]Triangulum GalaxyL/Teff
LGGS J013409.10+303351.8854[110]Triangulum GalaxyL/Teff
LGGS J013407.11+303918.7854[110]Triangulum GalaxyL/Teff
LGGS J004107.11+411635.6854[110]Andromeda GalaxyL/Teff
LGGS J013400.01+304622.2852[110]Triangulum GalaxyL/Teff
LGGS J013327.14+303917.4851[110]Andromeda GalaxyL/Teff
LGGS J013339.79+304032.2850[110]Triangulum GalaxyL/Teff
LGGS J004501.30+413922.5850[110]Andromeda GalaxyL/Teff
LGGS J004450.87+412924.3850[110]Andromeda GalaxyL/Teff
LGGS J004040.69+405908.1850[110]Andromeda GalaxyL/Teff
LGGS J003942.92+402051.1850[110]Andromeda GalaxyL/Teff
2MASS J01335092+3040481850[110]Triangulum GalaxyL/Teff
LGGS J013315.19+305319.8847[110]Triangulum GalaxyL/Teff
LGGS J013416.89+305158.3845[110]–920[134]Triangulum GalaxyL/Teff
LGGS J004415.17+415640.6845[110]Andromeda GalaxyL/Teff
LGGS J004424.94+412322.3844[110]Andromeda GalaxyL/Teff
LGGS J013331.93+301952.9838[110]Triangulum GalaxyL/Teff
LGGS J004406.16+414846.4836[110]Andromeda GalaxyL/Teff
LGGS J013445.65+303235.4835[110]Triangulum GalaxyL/Teff
LGGS J004109.39+404901.9834[110]Andromeda GalaxyL/Teff
LGGS J004423.83+414928.6833[110]Andromeda GalaxyL/Teff
LGGS J013242.31+302113.9833[134]Triangulum GalaxyL/Teff
LGGS J004030.48+404051.1833[110]Andromeda GalaxyL/Teff
LGGS J004118.29+404940.3832[110]Andromeda GalaxyL/Teff
LGGS J013414.17+304701.9831[110]Triangulum GalaxyL/Teff
LGGS J013328.89+303058.0831[110]Triangulum GalaxyL/Teff
LGGS J004107.70+403702.3831[110]Andromeda GalaxyL/Teff
LGGS J003925.67+404111.8831[110]Andromeda GalaxyL/Teff
LGGS J004306.95+410038.2826[110]Andromeda GalaxyL/Teff
LGGS J013408.81+304637.8826[110]Triangulum GalaxyL/Teff
LGGS J013345.22+303138.2826[110]Triangulum GalaxyL/Teff
LGGS J003950.65+402531.8825[110]Andromeda GalaxyL/Teff
LGGS J013427.65+305642.4825[134]Triangulum GalaxyL/Teff
LGGS J013500.04+303703.8823[110]Triangulum GalaxyL/Teff
LGGS J004108.42+410655.3822[110]Andromeda GalaxyL/Teff
LGGS J013340.77+302108.7821[110]–820[134]Triangulum GalaxyL/Teff
LGGS J004458.57+412925.1821[110]Andromeda GalaxyL/Teff
LGGS J013309.97+302727.5973[110]Triangulum GalaxyL/Teff
LGGS J004124.81+411206.1819[110]Andromeda GalaxyL/Teff
LGGS J013401.65+303128.7819[110]Triangulum GalaxyL/Teff
LGGS J013455.65+304349.0816[110]Triangulum GalaxyL/Teff
LGGS J013310.60+302301.8816[110]Triangulum GalaxyL/Teff
LGGS J004544.71+414331.9815[110]Andromeda GalaxyL/Teff
LGGS J004119.35+410836.4813[110]Andromeda GalaxyL/Teff
LGGS J013436.65+304517.1814[110]–812[134]Triangulum GalaxyL/Teff
LGGS J013301.79+303954.3812[110]Triangulum GalaxyL/Teff
LGGS J013328.85+310041.7810[110]–909[134]Triangulum GalaxyL/Teff
LGGS J013401.08+303432.2809[110]Triangulum GalaxyL/Teff
LGGS J004036.45+403613.1808[110]Andromeda GalaxyL/Teff
LGGS J004521.53+413758.6807[110]Andromeda GalaxyL/Teff
LGGS J004432.38+415149.9807[110]Andromeda GalaxyL/Teff
LGGS J013306.95+303506.1807[134]Triangulum GalaxyL/TeffContradictory classification in literature, it has been considered a candidate LBV, a RSG or a BSG.
LGGS J013242.26+302114.1807[110]Triangulum GalaxyL/Teff
LGGS J013321.94+304112.0806[110]–829[134]Triangulum GalaxyL/Teff
LGGS J013304.56+303043.2804[110]Triangulum GalaxyL/Teff
LGGS J004331.73+414223.0803[110]Andromeda GalaxyL/Teff
LGGS J004044.17+410729.0803[110]Andromeda GalaxyL/Teff
LGGS J013352.83+305605.2803[110]Triangulum GalaxyL/Teff
LGGS J013343.30+303318.9873[110]–803[134]Triangulum GalaxyL/Teff
LGGS J013342.61+303534.7800[110]Triangulum GalaxyL/Teff
LGGS J013326.90+310054.2800[110]–909[134]Triangulum GalaxyL/Teff
LGGS J013300.94+303404.3798[110]Triangulum GalaxyL/Teff
LGGS J013416.06+303730.0798[110]Triangulum GalaxyL/Teff
LGGS J004503.83+413737.0797[110]Andromeda GalaxyL/Teff
LGGS J004503.83+413737.0797[110]Andromeda GalaxyL/Teff
LGGS J004438.83+415253.0794[110]Andromeda GalaxyL/Teff
LGGS J004235.88+405442.2794[110]Andromeda GalaxyL/Teff
LGGS J004335.28+410959.7794[110]Andromeda GalaxyL/Teff
LGGS J013402.32+303828.4793[110]Triangulum GalaxyL/Teff
LGGS J004125.55+405034.8792[110]Andromeda GalaxyL/Teff
LGGS J013507.43+304132.6791[110]Triangulum GalaxyL/Teff
LGGS J013353.25+303918.7791[110]Triangulum GalaxyL/Teff
LGGS J004308.71+410604.5790[110]Andromeda GalaxyL/Teff
LGGS J013417.17+304826.6789[110]Triangulum GalaxyL/Teff
LGGS J013310.71+302714.9789[110]–884[134]Triangulum GalaxyL/Teff
LGGS J013432.36+304159.0788[110]Triangulum GalaxyL/Teff
LGGS J004356.23+414641.8788[110]Andromeda GalaxyL/Teff
LGGS J013340.77+302108.7788[110]Triangulum GalaxyL/Teff
LGGS J013346.61+304125.4786[110]Triangulum GalaxyL/Teff
LGGS J004447.08+412801.7785[110]Andromeda GalaxyL/Teff
LGGS J004255.95+404857.5785[135]Andromeda GalaxyL/Teff
LGGS J013231.91+302329.1783[110]Triangulum GalaxyL/Teff
LGGS J004110.32+410433.4782[110]Andromeda GalaxyL/Teff
LGGS J004159.06+405718.7780[110]Andromeda GalaxyL/Teff
LGGS J004241.10+413142.3775[110]Andromeda GalaxyL/Teff
LGGS J013401.88+303858.3776[134]Triangulum GalaxyL/Teff
LGGS J013445.12+305858.9773[110]Triangulum GalaxyL/Teff
LGGS J004030.92+404329.3773[110]Andromeda GalaxyL/Teff
LGGS J013359.57+303413.5771[110]Triangulum GalaxyL/Teff
LGGS J004353.97+411255.6771[110]Andromeda GalaxyL/Teff
LGGS J004029.03+403412.6770[110]Andromeda GalaxyL/Teff
LGGS J004526.24+420047.5767[110]Andromeda GalaxyL/Teff
LGGS J013348.44+302029.8767[110]Triangulum GalaxyL/Teff
LGGS J004552.15+421003.5767[110]Andromeda GalaxyL/Teff
LGGS J013320.75+303204.8764[110]Triangulum GalaxyL/Teff
LGGS J013416.28+303353.5763[110]–801[134]Triangulum GalaxyL/Teff
LGGS J013357.91+303338.9763[110]Triangulum GalaxyL/Teff
LGGS J013253.14+303515.3762[110]Triangulum GalaxyL/Teff
LGGS J004051.18+403053.4762[110]Andromeda GalaxyL/Teff
LGGS J013402.57+303746.3762[110]Triangulum GalaxyL/Teff
LGGS J013352.15+304006.4762[110]Triangulum GalaxyL/Teff
LGGS J004427.07+415203.0762[110]Andromeda GalaxyL/Teff
LGGS J004233.23+405917.0762[110]Andromeda GalaxyL/Teff
LGGS J004156.96+405720.8761[110]Andromeda GalaxyL/Teff
LGGS J004117.14+410843.7761[110]Andromeda GalaxyL/Teff
LGGS J004124.80+411634.7760, 1,205, 1,240[135]Andromeda GalaxyL/Teff
LGGS J004109.61+404920.4761[110]Andromeda GalaxyL/Teff
LGGS J003930.09+402313.0759[110]Andromeda GalaxyL/Teff
LGGS J013324.71+303423.7758[110]Triangulum GalaxyL/Teff
LGGS J013317.40+303210.8758[110]Triangulum GalaxyL/Teff
LGGS J013411.83+304631.0756[110]Triangulum GalaxyL/Teff
LGGS J004417.75+420039.1755[110]Andromeda GalaxyL/Teff
LGGS J004454.50+413007.8755[110]Andromeda GalaxyL/Teff
LGGS J013348.77+304526.8754[110]Triangulum GalaxyL/Teff
LGGS J004019.69+404912.2754[110]Andromeda GalaxyL/Teff
LGGS J004340.32+411157.1753[110]Andromeda GalaxyL/Teff
LGGS J013304.02+303215.2753[110]Triangulum GalaxyL/Teff
LGGS J013409.16+303846.9752[110]Triangulum GalaxyL/Teff
LGGS J013459.81+304156.9751[110]–765[134]Triangulum GalaxyL/Teff
LGGS J013334.82+302029.1751[110]–930[134]Triangulum GalaxyL/Teff
LGGS J013400.71+303422.3750[110]Triangulum GalaxyL/Teff
LGGS J004224.65+412623.7749[110]Andromeda GalaxyL/Teff
LGGS J013414.88+303401.2749[110]Triangulum GalaxyL/Teff
LGGS J004343.33+414529.5749[110]Andromeda GalaxyL/Teff
LGGS J004034.76+403648.9749[110]Andromeda GalaxyL/Teff
LGGS J013353.53+303418.7749[110]Triangulum GalaxyL/Teff
LGGS J004501.84+420259.2747[110]Andromeda GalaxyL/Teff
LGGS J013409.70+303916.2744[110]Triangulum GalaxyL/Teff
LGGS J013345.71+303609.8744[110]Triangulum GalaxyL/Teff
LGGS J004342.75+411442.8743[110]Andromeda GalaxyL/Teff
LGGS J013333.32+303147.2741[110]Triangulum GalaxyL/Teff
LGGS J013338.97+303506.1741[110]Triangulum GalaxyL/Teff
LGGS J013303.61+302841.5741[110]Triangulum GalaxyL/Teff
LGGS J004201.12+412516.0737[110]Andromeda GalaxyL/Teff
LGGS J004341.35+411213.8734[110]Andromeda GalaxyL/Teff
LGGS J013438.76+304608.1734[110]Triangulum GalaxyL/Teff
LGGS J013402.33+301749.2734[110]–786[134]Triangulum GalaxyL/Teff
2MASS J01334180+3040207732[110]Triangulum GalaxyL/Teff
LGGS J013354.32+301724.6732[110]–854[134]Triangulum GalaxyL/Teff
LGGS J013334.23+303400.3732[110]Triangulum GalaxyL/Teff
LGGS J013357.60+304113.3730[110]Triangulum GalaxyL/Teff
LGGS J004614.57+421117.4730[110]Andromeda GalaxyL/Teff
LGGS J004120.96+404125.3730[110]Andromeda GalaxyL/Teff
LGGS J004228.46+405519.0728[110]Andromeda GalaxyL/Teff
LGGS J004024.52+404444.8728[110]Andromeda GalaxyL/Teff
LGGS J013349.75+304459.8727[110]Triangulum GalaxyL/Teff
LGGS J013306.88+303004.6727[110]Triangulum GalaxyL/Teff
LGGS J004358.00+412114.1727[110]Andromeda GalaxyL/Teff
LGGS J004147.27+411537.8727[110]Andromeda GalaxyL/Teff
LGGS J013407.23+304158.8725[110]–833[134]Triangulum GalaxyL/Teff
LGGS J004519.82+415531.9725[110]Andromeda GalaxyL/Teff
LGGS J004410.84+411538.8725[110]Andromeda GalaxyL/Teff
LGGS J013407.38+305935.0724[110]Triangulum GalaxyL/Teff
LGGS J004438.75+415553.6724[110]Andromeda GalaxyL/Teff
LGGS J004324.16+411228.3723[110]Andromeda GalaxyL/Teff
LGGS J004059.58+403815.6723[110]Andromeda GalaxyL/Teff
LGGS J013327.40+304126.4721[110]Triangulum GalaxyL/Teff
LGGS J013243.72+301912.5721[110]–783[134]Triangulum GalaxyL/Teff
Gaia DR3 303379932695513216720[110]Triangulum GalaxyL/Teff
LGGS J004558.92+414642.1720[110]Andromeda GalaxyL/Teff
LGGS J004103.46+403633.2717[110]Andromeda GalaxyL/Teff
LGGS J013324.89+301754.3717[110]Triangulum GalaxyL/Teff
LGGS J004015.18+405947.7716[110]Andromeda GalaxyL/Teff
LGGS J013414.53+303557.7715[110]Triangulum GalaxyL/Teff
LGGS J013351.89+303853.5715[110]Triangulum GalaxyL/Teff
LGGS J004458.82+413050.4715[110]Andromeda GalaxyL/Teff
LGGS J013352.51+303942.2715[110]Triangulum GalaxyL/Teff
LGGS J004124.91+411133.1715[110]Andromeda GalaxyL/Teff
LGGS J004604.18+415135.4713[110]Andromeda GalaxyL/Teff
LGGS J013305.17+303119.8711[110]Triangulum GalaxyL/Teff
LGGS J004517.25+413948.2711[110]Andromeda GalaxyL/Teff
LGGS J013349.86+303246.1710[136]–795[134]Triangulum GalaxyL/TeffA yellow supergiant.
2MASS J01335929+3034435709[110]Triangulum GalaxyL/Teff
LGGS J004230.32+405624.1708[110]Andromeda GalaxyL/Teff
LGGS J004101.02+403506.1708[110]Andromeda GalaxyL/Teff
LGGS J004119.21+411237.2707[110]Andromeda GalaxyL/Teff
LGGS J004606.25+415018.9707[110]Andromeda GalaxyL/Teff
LGGS J013442.05+304540.2707[110]–707[134]Triangulum GalaxyL/Teff
LGGS J013431.84+302721.5707[110]–717[134]Triangulum GalaxyL/Teff
LGGS J013304.68+304456.0707[110]–739[134]Triangulum GalaxyL/Teff
LGGS J004432.27+415158.4705[110]Andromeda GalaxyL/Teff
2MASS J01335131+3039149704[110]Triangulum GalaxyL/Teff
LGGS J013339.46+302113.0703[110]–748[134]Triangulum GalaxyL/Teff
LGGS J003935.36+401946.4703[110]Andromeda GalaxyL/Teff
LGGS J013343.03+303433.5702[110]Triangulum GalaxyL/Teff
LGGS J004505.87+413452.3702[110]Andromeda GalaxyL/Teff
LGGS J013414.18+305248.0701[110]–731[134]Triangulum GalaxyL/Teff
LGGS J013402.53+304107.7701[110]–749[134]Triangulum GalaxyL/Teff
LGGS J013340.80+304248.5701[110]–814[134]Triangulum GalaxyL/Teff
LGGS J013312.59+303252.5701[110]Triangulum GalaxyL/Teff
The following well-known stars are listed for the purpose of comparison.
Var 83150[137]Triangulum GalaxyL/TeffA luminous blue variable and one of the most luminous stars in M33.

Other galaxies (within the Local Group)

List of the largest known stars in other galaxies (within the Local Group)
Star nameSolar radii
(Sun = 1)		GalaxyMethod[a]Notes
Sextans A 10995±130[138]Sextans AL/Teff
NGC 6822-RSG 19928[139]NGC 6822L/Teff
WLM 02883+284
−167[140]		WLML/Teff
Sextans A 5870±145[138]Sextans AL/Teff
NGC 6822-RSG 26866[139]NGC 6822L/Teff
NGC 6822-RSG 12837[139]NGC 6822L/Teff
Leo A 7785[141]Leo AL/Teff
NGC 6822-RSG 9763[139]NGC 6822L/Teff
NGC 6822-RSG 6712[139]NGC 6822L/Teff
Sextans A 7710±100[138]Sextans AL/Teff
The following well-known stars are listed for the purpose of comparison.
NGC 6822-WR 123.79[142]NGC 6822L/TeffAWolf-Rayet star, one of the hottest known stars.

Outside the Local Group (inside the Virgo supercluster)

List of the largest known stars in galaxies outside the Local Group inside the Virgo supercluster
Star nameSolar radii
(Sun = 1)		GalaxyGroupMethod[a]Notes
NGC 300-1251,504+176
−157[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-1541,503+79
−75[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 7793-341,392+157
−160[143]		NGC 7793Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-401,286+116
−106[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 2403 V141,260[144]NGC 2403M81 GroupL/TeffAF-typeluminous blue variable.
NGC 300-1541,200+123
−111[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1141,181+123
−111[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1991,181+120
−109[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1531,173+120
−109[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1501,167+119
−107[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 253-20061,167+75
−70[143]		Sculptor GalaxySculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
SPIRITS 14atl1,134–1,477[145]Messier 83Centaurus A/M83 GroupL/Teff
NGC 300-591,133+146
−129[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 7793-861,127+94
−109[143]		NGC 7793Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-2631,108+113
−102[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-4471,101+58
−56[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
SPIRITS 15ahp1,098[145]NGC 2403M81 GroupL/Teff
NGC 300-2401,088+112
−101[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 7793-861,078+69
−64[143]		NGC 7793Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1731,063+84
−77[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-3401,036+105
−95[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-3461,023+139
−128[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-5331,004+66
−62[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-351992+115
−102[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-524987+77
−72[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-135964+99
−89[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-93955+49
−47[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 7793-539948[143]NGC 7793Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-87948+109
−98[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-146921+49
−46[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-273921+94
−85[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-186915+72
−65[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-200905+59
−55[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-152895+58
−54[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-413861+66
−61[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-174856+65
−61[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
M81 10584-25-2851[144]Messier 81M81 GroupL/Teff
M81 10584-13-3843[144]Messier 81M81 GroupL/Teff
NGC 55-75836+81
−111[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-545824+104
−93[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-2912821+54
−51[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-216801+102
−89[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-1471798+52
−48[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-499796+89
−108[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-379744+56
−52[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-838744+57
−53[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-149738+47
−55[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-194730+46
−44[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
[GKE2015] 7729[146]NGC 300NGC 55 GroupL/Teff
NGC 55-270728+38
−36[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1047724+65
−59[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-3231719+56
−51[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 247-2966719+56
−52[143]		NGC 247Sculptor GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 55-245717+55
−50[143]		NGC 55NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1068716+64
−58[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
NGC 300-1081712+54
−51[143]		NGC 300NGC 55 GroupL/TeffEffective temperature is based onTitanium(II) oxide lines, which often results in lower values, therefore increasing the radius.[143]
The following well-known stars are listed for the purpose of comparison.
Holmberg IX V1 A337[147]Holmberg IXM81 GroupL/TeffPrimary star of ayellow supergiantcontact binary.
Holmberg IX V1 B292[148]Holmberg IXM81 GroupL/TeffSecondary star of ayellow supergiantcontact binary.
NGC 2363-V1194–356[149]NGC 2366M81 GroupL/Teff
[HMR2016]N4038 13068124-885[150]NGC 4038NGC 4038 GroupL/Teff
[HMR2016]N4038 4684288-815[151]NGC 4038NGC 4038 GroupL/Teff

Outside the Virgo supercluster

Note that this list does not include the candidateJWSTdark stars, with estimated radii of up to 61 astronomical units (13,000 R☉)[152] orQuasi-stars, with theoretical models suggesting that they could reach radii of up to 40,700 solar radii (189 au).[153]

Star nameSolar radii
(Sun = 1)		GalaxyGroupMethod[a]Notes
Quyllur965[154]ACT-CL J0102-4915L/TeffLikely the first red supergiant star at cosmological distances and is also discovered byJames Webb Space Telescope.
The following well-known stars are listed for the purpose of comparison.
Godzilla430–2,365[155]Sunburst galaxyPSZ1 G311.65-18.48L/TeffThe most luminous known star.[156]
Mothra271[157]LS1MACS J0416.1-2403L/TeffA binary star at cosmological distances.

Transient events

During some transient events, such asred novae orLBV eruptions the star's radius can increase by a significant amount.

List of largest stars during transient events
Star or transient event nameSolar radii
(Sun = 1)		YearGalaxyGroupMethodNotes
AT 2017jfs>33,000[158]2017NGC 4470L/Teff
SNhunt15116,700[159]2014UGC 3165LDC 331L/Teff
SN 2015bh16,400±2,600[160]2015NGC 2770LDC 616L/Teff
AT 2018hso10,350[161]2018NGC 3729M109 GroupL/Teff
AT 2023clx6,800[162]2023NGC 3799nest 101314L/Teff
M51 OT2019-15,500[163]2019Whirlpool GalaxyM51 GroupL/Teff
η Carinae4,319 – 6,032[93]1845Milky WayLocal GroupL/TeffDuring the outburst, the star became the second brightest star in sky, reaching an apparent magnitude of between −0.8 and −1.0.[164]
AT 2010dn4,130[165]2010NGC 3180LDC 743L/Teff
SN 2011fh3,980[166]2011NGC 4806Abell 3528L/Teff
AT 2014ej3,600[167]2014NGC 7552Grus QuartetL/Teff
V838 Monocerotis3,190[83]2002Milky WayLocal GroupL/Teff
SN2008S3,020[165]2008NGC 6946NGC 6946 GroupL/Teff
SNhunt1202,900[168][167]2012NGC 5775Virgo ClusterL/Teff
AT 2017be2,000[169]2017NGC 2537L/Teff
PHL 293B star1,348 – 1,463[170]2002PHL 293BL/Teff
SNhunt248~850[171]2014NGC 5806NGC 5846 GroupL/Teff
R71500[172]2012Large Magellanic CloudLocal GroupL/Teff
SN 2000ch500[173]2000NGC 3432LDC 743L/Teff
Godzilla430 – 2,365[155]2015Sunburst galaxy?
AT 2016blu~330[174]2012 – 2022NGC 4559Coma I GroupL/Teff19 outbursts were detected between 2012 and 2022. The star was likely relatively stable the decade before since no outbursts were detected from 1999 – 2009.[174]

SN Progenitors

List of largest supernova progenitors
Star or supernova nameSolar radii
(Sun = 1)		YearGalaxyGroupMethodNotes
SN 2020faa1,000[175]20202MASS J14470904+7244157L/Teff
SN 2023ixf912+227
−222[176]–1,060±30[177]		2023Pinwheel galaxyM101 GroupL/Teff
SN 2020jfo700±10[178]2020Messier 61Virgo ClusterL/Teff
SN 2023axu417±28[179]2023NGC 2283L/Teff
SN 2021agco78.37+25.59
−19.94[180]		2021UGC 3855LDC 506L/TeffNearest ultrastripped supernova known.

Largest stars by apparent size

The following list include the largest stars by their apparent size (angular diameter) as seen from Earth. The unit of measurement is themilliarcsecond (mas), equivalent to10×10−3 arcseconds. Stars with angular diameters larger than 13 milliarcseconds are included.

List of largest stars by apparent size (angular diameter)
NameAngular diameter
(mas)		Angular diameter type[g]Distance
(light-years)		Spectral type[181]Notes
Sun2,000,0000.000016G2VThe largest star by angular diameter.
R Doradus51.18±1.24[87]LD

179±10[87]

M8III:eThe largest star by angular diameter apart from the Sun.
Betelgeuse
(α Orionis)		42.28±0.43[74]LD

408–540+98
−49[74]

M1-M2Ia-Iab
Antares
(α Scorpii A)		37.31±0.09[182]LD553.5±93.9[183]M1.5Iab
Mira
(ο Ceti)		28.9±0.3 – 34.9±0.4[184]Ross299±33[183]M5-M9IIIeThe angular diameter vary during Mira's pulsations.
Tiaki
(β Gruis)		28.8±0.6[185]?177±4[183]M4.5III
Gacrux
(γ Crucis)		24.7[98]?88.6±0.4[183]M3.5III
Rasalgethi
(α Herculis)		23.95±5.03[88]Est359±52[183]M5Ib-II
R Hydrae23.7±1[18]?482±33[18]M6-9e
Arcturus
(α Boötis)		21.06±0.17[186]LD36.8[186]K1.5IIIFe-0.5
π1 Gruis21[187]?535[187]S5,7
Aldebaran
(α Tauri)		20.58[188]–21.1[189]LD65.3±1[190]K5+III
GY Aquilae20.46[18]?1108±98[18]M8
θ Apodis18.1[191]?389±17[192]M6.5III
R Lyrae18.016±0.224[189]LD310+10
−7[193]		M4.5III
Scheat
(β Pegasi)		16.75±0.24[194]Ross196±2[183]M2.5II-III
Gorgonea Tertia
(ρ Persei)		16.555±0.166[189]LD308±7[183]M4+IIIa
SW Virginis16.11±0.13–16.8±0.34[195]UD527±46.9[196]M7III:
R Aquarii15.61±0.8 – 16.59±1.03[195]LD711+39
−36[197]		M6.5–M8.5e
g Herculis15.2±0.5 – 19.09±0.19[195]LD385±10[193]M6-III
RS Cancri15.1±0.5 – 17.2±0.4[189]LD490±40[198]M6S
Tejat
(μ Geminorum)		15.118±0.151[189]LD230±10[183]M3IIIab
R Leonis Minoris14.4±0.87[195]LD942+33
−47[193]		M6.5-9e
S Cephei14.29±2.28[195]LD1591+49
−46[193]		C7,3e
T Cassiopeiae14.22±0.73[195]LD893+49
−46[193]		M7-9e
μ Cephei(Herschel's Garnet Star)14.11 ± 0.6[29]2,000[32]–3060+460
−130[31]		M2Ia
Mirach
(β Andromedae)		13.749±0.137[189]LD199±9[199]M0+IIIa
Menkar
(α Ceti)		13.238±0.056[189]LD249±8[183]M1.5IIIaOther measurements include 12.2±0.04 mas.[200]
V Cygni13.1±0.208 – 14.84±2.37[195]LD1747+163
−137[193]		C7,4eJ

See also

Notes

  1. ^abcdefMethods for calculating the radius:
  2. ^abcdefAt the J2000 epoch
  3. ^Using an angular diameter of7.8±0.64 milliarcseconds[22] and a distance of1610+130
    −110     parsecs.    [23]
  4. ^Using an angular diameter of14.11±0.6 milliarcseconds[29] and a distance of940+140
    −40     parsecs.
  5. ^Luminosities are calculated using theapparent bolometric magnitude and distances in the following equation:
    100.4 • (4.74−(mbol+5−5 • log(dist)))
  6. ^Calculated using a distance of 432parsecs and anangular diameter of 2.31milliarcseconds.
  7. ^Legend:
    UD=Uniform disk diameter
    LD=Limb-darkened diameter
    Ross=Rosseland diameter
    Est = Estimated using distance and physical radius

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  173. ^Aghakhanloo, Mojgan; Smith, Nathan; Milne, Peter; Andrews, Jennifer E.; Filippenko, Alexei V.; Jencson, Jacob E.; Sand, David J.; Van Dyk, Schuyler D.; Wyatt, Samuel; Zheng, WeiKang (28 February 2023)."Repeating periodic eruptions of the supernova impostor SN 2000ch".Monthly Notices of the Royal Astronomical Society.521 (2):1941–1957.arXiv:2212.00113.Bibcode:2023MNRAS.521.1941A.doi:10.1093/mnras/stad630.ISSN 0035-8711.S2CID 254125316.
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  180. ^Yan, Shengyu; Wang, Xiaofeng; Gao, Xing; Zhang, Jujia; Brink, Thomas G.; Mo, Jun; Lin, Weili; Xiang, Danfeng; Ma, Xiaoran; Guo, Fangzhou; Tomasella, Lina; Benetti, Stefano; Cai, Yongzhi; Cappellaro, Enrico; Chen, Zhihao; Li, Zhitong; Pastorello, Andrea; Zhang, Tiangmeng (7 October 2023)."Discovery of the Closest Ultrastripped Supernova: SN 2021agco in UGC 3855".The Astrophysical Journal.959 (2): L32.arXiv:2310.04827.Bibcode:2023ApJ...959L..32Y.doi:10.3847/2041-8213/ad0cc3.
  181. ^SIMBAD.
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  191. ^Paladini, C.; Klotz, D.; Sacuto, S.; Lagadec, E.; Wittkowski, M.; Richichi, A.; Hron, J.; Jorissen, A.; Groenewegen, M. A. T.; Kerschbaum, F.; Verhoelst, T.; Rau, G.; Olofsson, H.; Zhao-Geisler, R.; Matter, A. (1 April 2017). "The VLTI/MIDI view on the inner mass loss of evolved stars from the Herschel MESS sample".Astronomy and Astrophysics.600: A136.arXiv:1701.05407.Bibcode:2017A&A...600A.136P.doi:10.1051/0004-6361/201527210.ISSN 0004-6361.
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  193. ^abcdefBailer-Jones, C. A. L.; Rybizki, J.; Fouesneau, M.; Demleitner, M.; Andrae, R. (2021)."Estimating Distances from Parallaxes. V. Geometric and Photogeometric Distances to 1.47 Billion Stars in Gaia Early Data Release 3".The Astronomical Journal.161 (3): 147.arXiv:2012.05220.Bibcode:2021AJ....161..147B.doi:10.3847/1538-3881/abd806.S2CID 228063812. Data about this star can be seenhere.
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  197. ^Min, Cheulhong; Matsumoto, Naoko; Kim, Mi Kyoung; Hirota, Tomoya; Shibata, Katsunori M.; Cho, Se-Hyung; Shizugami, Makoto; Honma, Mareki (1 April 2014). "Accurate Parallax Measurement toward the Symbiotic Star R Aquarii".Publications of the Astronomical Society of Japan.66 (2): 38.arXiv:1401.5574.doi:10.1093/pasj/psu003.ISSN 2053-051X.
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