B1 Hydrae
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Hydra |
| Right ascension | 10h 46m 52.05s |
| Declination | −17° 17′ 48.7″ |
| Apparent magnitude (V) | 5.42 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A3V |
| U−B color index | +0.14 |
| B−V color index | +0.11 |
| R−I color index | +0.04 |
| Astrometry | |
| Radial velocity (Rv) | +0.23±0.99 km/s |
| Proper motion (μ) | RA: −15.864 mas/yr Dec.: −18.786 mas/yr |
| Parallax (π) | 17.7995±0.1794 mas |
| Distance | 183 ± 2 ly (56.2 ± 0.6 pc) |
| Absolute magnitude (MV) | +1.45 |
| Details | |
| Mass | 2.09 M☉ |
| Radius | 1.94 R☉ |
| Luminosity | 17.2 L☉ |
| Surface gravity (log g) | 4.18 cgs |
| Temperature | 8,433 K |
| Rotational velocity (v sin i) | 96 km/s |
| Age | 652 Myr |
| Other designations | |
| 3 Crt, BD−16°3124, HD 93397, HR 4214, SAO 156221 | |
| Database references | |
| SIMBAD | data |
b1 Hydrae is a main-sequence star in the constellation of Hydra with an apparent magnitude of 5.42.
References
- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- 1 2 3 4 5 "VizieR Detailed Page". Archived from the original on 2016-03-05. Retrieved 2012-07-13.
- 1 2 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
- ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
- 1 2 3 4 5 Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
- ↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.
- ↑ "3 Crt". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-11-13.
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