HV 2255
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Mensa |
| Right ascension | 04h 57m 43.3040949002s |
| Declination | −70° 08′ 50.406116306″ |
| Apparent magnitude (V) | 12.4 |
| Characteristics | |
| Evolutionary stage | Red supergiant |
| Spectral type | M4 D |
| Details | |
| Radius | 1,235[1] R☉ |
| Other designations | |
UCAC2 1554200, HV 2255 | |
| Database references | |
| SIMBAD | data |
This star is a luminous red supergiant or red hypergiant star. It is one of the largest stars ever found, with a solar radii of over 1300 solar radii. If placed in our solar system, its photosphere would engulf the orbit of Jupiter.[2]
References
- ↑ Groenewegen, M. A. T.; Sloan, G. C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and red supergiants". Astronomy & Astrophysics. 609. arXiv:1711.07803. Bibcode:2018A&A...609A.114G. doi:10.1051/0004-6361/201731089.
- ↑ Groenewegen, M. A. T.; Sloan, G. C. (2018). "Luminosities and mass-loss rates of Local Group AGB stars and red supergiants". Astronomy & Astrophysics. 609. arXiv:1711.07803. Bibcode:2018A&A...609A.114G. doi:10.1051/0004-6361/201731089.
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