V354 Cephei

V354 Cephei
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cepheus
Right ascension 22h 33m 34.636s[1]
Declination +58° 53′ 47.12″[1]
Apparent magnitude (V) 10.82 to 11.35[2]
Characteristics
Spectral type M2.5 Iab[3] – M3.5 Ib[4]
B−V color index +3.18[5]
Variable type Lc[2]
Astrometry
Proper motion (μ) RA: –3.151[1] mas/yr
Dec.: –2.398[1] mas/yr
Parallax (π)0.2161 ± 0.0388 mas[1]
Distance12,700+2,200
−1,700 ly
(3,900+680
−510 pc)[6]
Absolute magnitude (MV)–7.57 (variable)[5]
Absolute bolometric
magnitude (Mbol)		-8.51[7]
Details
Radius1,139[7][a] R☉
Luminosity76,000[8] – 199,500[7][b] L☉
Surface gravity (log g)–0.5[5] cgs
Temperature3,615[7] K
Other designations
V354 Cep, 2MASS J22333464+5853470, IRAS 22317+5838
Database references
SIMBADdata

V354 Cephei is a red supergiant star located within the Milky Way. It is an irregular variable located over 13,000 light-years away from the Sun. It has an estimated radius of 1,139 solar radii (792,000,000 km; 5.30 au).[7] If it were placed in the center of the Solar System, it would extend to between the orbits of Mars and Jupiter.

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b "V354 Cep, database entry". The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars. Moscow, Russia: Sternberg Astronomical Institute. Archived from the original on June 20, 2017. Retrieved November 12, 2010.
  3. ^ Verhoelst, T.; Van Der Zypen, N.; Hony, S.; Decin, L.; Cami, J.; Eriksson, K. (2009). "The dust condensation sequence in red supergiant stars". Astronomy and Astrophysics. 498 (1): 127–138. arXiv:0901.1262. Bibcode:2009A&A...498..127V. doi:10.1051/0004-6361/20079063. S2CID 18383796.
  4. ^ Dorda, R.; Negueruela, I.; González-Fernández, C. (2018). "The red supergiant population in the Perseus arm". Monthly Notices of the Royal Astronomical Society. 475 (2): 2003. arXiv:1712.08176. Bibcode:2018MNRAS.475.2003D. doi:10.1093/mnras/stx3317. S2CID 54605960.
  5. ^ a b c Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (August 2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal. 628 (2): 973–985. arXiv:astro-ph/0504337. Bibcode:2005ApJ...628..973L. doi:10.1086/430901. S2CID 15109583.
  6. ^ Cite error: The named reference b-j was invoked but never defined (see the help page).
  7. ^ a b c d e Verhoelst, T.; van der Zypen, N.; Hony, S.; Decin, L.; Cami, J.; Eriksson, K. (2009-04-01). "The dust condensation sequence in red supergiant stars". Astronomy and Astrophysics. 498 (1): 127–138. arXiv:0901.1262. Bibcode:2009A&A...498..127V. doi:10.1051/0004-6361/20079063. ISSN 0004-6361.
  8. ^ Cite error: The named reference mauron was invoked but never defined (see the help page).


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