Astronomy:WOH S279
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Short description: Red supergiant star in the constellation Dorado
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Dorado (LMC) |
| Right ascension | 05h 26m 01.1049s[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 |
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]
See also
Notes
- ↑ The radius is calculated with the Stefan-Boltzmann law, using the bolometric luminosity and effective temperature of WOH S279: [math]\displaystyle{ \sqrt{\left(\frac{5772}{3500}\right)^4\cdot 227669}\approx1297.68 \ R_\odot }[/math]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.
- ↑ 2.0 2.1 2.2 2.3 2.4 Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode: 2012yCat.1322....0Z.
- ↑ 3.0 3.1 "Simbad (WOH 279)". http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WOH+S279&submit=SIMBAD+search.
- ↑ 4.0 4.1 4.2 4.3 4.4 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. doi:10.1051/0004-6361/201731089. ISSN 0004-6361. Bibcode: 2018A&A...609A.114G.
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