WOH S279

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

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]

Notes[]

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

^ ^a ^b ^c ^d ^e ^f 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.
^ ^a ^b ^c ^d ^e Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.
^ ^a ^b "Simbad (WOH 279)".
^ ^a ^b ^c ^d ^e 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. S2CID 59327105.

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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 (R_v)	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]^[a] `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