WOH S279

WOH S279 is a red supergiant located in the constellation of Dorado.[3] It is currently among the largest known stars with an radius of about 1,300 solar radii. If placed at the center of the solar system, its photosphere would engulf the orbit of Jupiter.[4]

WOH S279

Observation data Epoch J2000      Equinox
Constellation	Dorado (LMC)
Right ascension	05^h 26^m 01.1049^s[1]
Declination	−66° 16′ 19.058″[1]
Apparent magnitude (V)	12.515[2]
Characteristics
Evolutionary stage	Red supergiant
Spectral type	M[3]
Apparent magnitude (B)	14.205[2]
Apparent magnitude (G)	11.8867[1]
Apparent magnitude (J)	8.990[2]
Apparent magnitude (H)	8.103[2]
Apparent magnitude (K)	7.748[2]
Astrometry
Radial velocity (Rv)	304.84 ± 0.30[1] km/s
Proper motion (μ)	RA: 1.635[1] mas/yr Dec.: 0.369[1] mas/yr
Details
Radius	1,298[4][lower-alpha 1] R☉
Luminosity	228,000[4] L☉
Surface gravity (log g)	+0.0[4] cgs
Temperature	3,500[4] K
Other designations
WOH S279, 2MASS J05260108-6616191, MSX LMC 844, SP77 44-19, NGC 1948 WBT 2215
Database references
SIMBAD	data

See also

• WOH G17
• WOH G64
• WOH S140 (HV 888)
• WOH S281
• List of largest stars

Notes

1. The radius is calculated with the Stefan-Boltzmann law, using the bolometric luminosity and effective temperature of WOH S279: ${\displaystyle {\sqrt {\left({\frac {5772}{3500}}\right)^{4}\cdot 227669}}\approx 1297.68\ R_{\odot }}$

References

1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
2. Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.
3. "Simbad (WOH 279)".
4. Groenewegen, Martin A. T.; Sloan, Greg C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and Red Supergiants". Astronomy & Astrophysics. 609: A114. arXiv:1711.07803. Bibcode:2018A&A...609A.114G. doi:10.1051/0004-6361/201731089. ISSN 0004-6361.