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V450 Aquilae

From Wikipedia, the free encyclopedia
Star in the constellation Aquila
V450 Aquilae

Thevisual bandlight curve of V450 Aquilae, adapted from Percyet al. (2001)[1]
Observation data
Epoch J2000      Equinox J2000
ConstellationAquila
Right ascension19h 33m 46.031s[2]
Declination+05° 27′ 56.54″[2]
Apparent magnitude (V)6.14 to 6.86[3]
Characteristics
Evolutionary stageAGB[4]
Spectral typeM5-5.5III
B−Vcolor index1.471
Variable typeSRb[3]
Astrometry
Radial velocity (Rv)3 km/s
Proper motion (μ)RA: −5.26 ± 0.53[2]mas/yr
Dec.: −24.24 ± 0.32[2]mas/yr
Parallax (π)4.94±0.47 mas[2]
Distance660 ± 60 ly
(200 ± 20 pc)
Absolute magnitude (MV)−1.87
Details
Luminosity2172[5] L
Temperature3326[5] K
Other designations
BD+05°4190,HD 184313,HIP 96204,SAO 124789`
Database references
SIMBADdata

V450 Aquilae issemi-regular pulsating star in the constellation Aquila. Located around 660 light-years distant, it shines with aluminosity approximately 2,172 times that of the Sun and has a surface temperature of 3,326 K.[5] The star varies in brightness frommagnitude from 6.14 to 6.86, so when it is at its brightest, it will be faintly visible to thenaked eye.

Cuno Hoffmeister announced that V450 Aquilae was a newly discovered variable star in 1935.[6] Its period is 64.2 days.[3]

References

[edit]
  1. ^Percy, John R.; Wilson, Joseph B.; Henry, Gregory W. (August 2001)."Long-Term VRI Photometry of Small-Amplitude Red Variables. I. Light Curves and Periods".Publications of the Astronomical Society of the Pacific.113 (786):983–996.Bibcode:2001PASP..113..983P.doi:10.1086/322153.S2CID 14609175.
  2. ^abcdevan Leeuwen, F. (2007)."Validation of the new Hipparcos reduction".Astronomy and Astrophysics.474 (2):653–664.arXiv:0708.1752.Bibcode:2007A&A...474..653V.doi:10.1051/0004-6361:20078357.S2CID 18759600.Vizier catalog entry
  3. ^abc"V0450 Aql".The International Variable Star Index. AAVSO. Retrieved28 October 2024.
  4. ^McDonald, I.; De Beck, E.; Zijlstra, A. A.; Lagadec, E. (2018)."Pulsation-triggered dust production by asymptotic giant branch stars".Monthly Notices of the Royal Astronomical Society.481 (4): 4984.arXiv:1809.07965.Bibcode:2018MNRAS.481.4984M.doi:10.1093/mnras/sty2607.
  5. ^abcMcDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012)."Fundamental Parameters and Infrared Excesses of Hipparcos Stars".Monthly Notices of the Royal Astronomical Society.427 (1):343–57.arXiv:1208.2037.Bibcode:2012MNRAS.427..343M.doi:10.1111/j.1365-2966.2012.21873.x.S2CID 118665352.
  6. ^Hoffmeister, Cuno (June 1935)."162 neue Veräderliche".Astronomische Nachrichten.255 (22): 401.Bibcode:1935AN....255..401H.doi:10.1002/asna.19352552202. Retrieved28 October 2024.


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