Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vela |
Right ascension | 08h 34m 43.59703s[1] |
Declination | –49° 56′ 39.1359″[1] |
Apparent magnitude (V) | 5.01[2] |
Characteristics | |
Evolutionary stage | supergiant |
Spectral type | K1.5Ib[3] |
U−Bcolor index | +1.38[2] |
B−Vcolor index | +1.33[2] |
Variable type | microvariable[4] |
Astrometry | |
Radial velocity (Rv) | 4.25±0.17[1] km/s |
Proper motion (μ) | RA: −14.236±0.322[1]mas/yr Dec.: 18.540±0.353[1]mas/yr |
Parallax (π) | 3.1501±0.1571 mas[1] |
Distance | 1,040 ± 50 ly (320 ± 20 pc) |
Absolute magnitude (MV) | –2.06[5] |
Details | |
Mass | 3.3±1.1[6] M☉ |
Radius | 73[7] R☉ |
Luminosity | 34.36 - 38.02[7] L☉ |
Surface gravity (log g) | 2.0[8] cgs |
Temperature | 3,745±170[7] K |
Metallicity [Fe/H] | −0.4[8] dex |
Rotational velocity (v sin i) | 4.1[8] km/s |
Other designations | |
C Vel,CD−49°3646,FK5 2674,HD 73155,HIP 42088,HR 3407,SAO 220138[9] | |
Database references | |
SIMBAD | data |
HR 3407 is a single[10]star in the southernconstellation ofVela. It has theBayer designationC Velorum;HR 3407 is the designation in theBright Star Catalogue.[9] It is an orange-hued star that is dimly visible to the naked eye with anapparent visual magnitude of 5.01.[2] The distance to this object is approximately 1,040 light years based onparallax measurements, and it is drifting further away with aradial velocity of 4 km/s.[1]
This object is an agingK-typesupergiant star with astellar classification of K1.5Ib.[3] It has about three[6] times themass of the Sun and has expanded to around 71[1] times theSun's radius. The latter is equivalent to 0.33 AU, or about one third the distance from the Sun to the Earth. It is spinning with aprojected rotational velocity of 4.1.[8] The star displays microvariability with a period of 10.99 cycles per day and an amplitude of 0.0036 in magnitude.[4] It is radiating around 1,600 times theluminosity of the Sun from its enlargedphotosphere at aneffective temperature of 4,324 K.[1]