WOH S281
WOH S281 (IRAS 05261-6614) is a red supergiant located in the constellation of Dorado.[2] It is currently among the largest known stars with an radius of over 1,300 solar radii. If placed at the center of the solar system, its photosphere would engulf the orbit of Jupiter.[1]
Observation data Epoch J2000 Equinox | |
---|---|
Constellation | Dorado (LMC) |
Right ascension | 05h 26m 11.37s |
Declination | −66° 12′ 11.07″ |
Apparent magnitude (V) | 14.17 |
Characteristics | |
Evolutionary stage | Red supergiant |
Spectral type | M3 |
Apparent magnitude (K) | 7.878 |
Apparent magnitude (R) | 13.42 |
Apparent magnitude (B) | 16.77 |
Apparent magnitude (G) | 13.672 |
Apparent magnitude (J) | 9.376 |
Apparent magnitude (H) | 8.359 |
Astrometry | |
Radial velocity (Rv) | 309.64 km/s |
Proper motion (μ) | RA: 1.358 mas/yr Dec.: 0.263 mas/yr |
Details | |
Radius | 1,376[1][lower-alpha 1] R☉ |
Luminosity | 179,000[1] L☉ |
Surface gravity (log g) | +0.5[1] cgs |
Temperature | 3,200[1] K |
Other designations | |
WOH S281, IRAS 05261-6614, 2MASS J05261135-6612111, UCAC2 2673201 | |
Database references | |
SIMBAD | data |
Notes
- The radius is calculated with the Stefan-Boltzmann law, using the bolometric luminosity and effective temperature of WOH S281:
References
- 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.
- "Simbad (WOH 281)".
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.