B1 Hydrae

Last updated
b1 Hydrae
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Hydra [1]
Right ascension 10h 46m 52.05s [2]
Declination −17° 17′ 48.7″ [2]
Apparent magnitude  (V)5.42 [3]
Characteristics
Evolutionary stage main sequence [4]
Spectral type A3V [3]
U−B color index +0.14 [3]
B−V color index +0.11 [3]
R−I color index +0.04 [3]
Astrometry
Radial velocity (Rv)+0.23±0.99 [2] km/s
Proper motion (μ)RA: −15.864 [2] mas/yr
Dec.: −18.786 [2] mas/yr
Parallax (π)17.7995±0.1794  mas [2]
Distance 183 ± 2  ly
(56.2 ± 0.6  pc)
Absolute magnitude  (MV)+1.45 [5]
Details
Mass 2.09 [6]   M☉
Radius 1.94 [6]   R☉
Luminosity 17.2 [6]   L☉
Surface gravity (log g)4.18 [6]   cgs
Temperature 8,433 [6]   K
Rotational velocity (v sin i)96 [4]  km/s
Age 652 [7]   Myr
Other designations
3 Crt, BD−16°3124, HD 93397, HR 4214, SAO 156221 [8]
Database references
SIMBAD data

b1 Hydrae is a main-sequence star in the constellation of Hydra with an apparent magnitude of 5.42.

References

  1. ↑ 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.
  2. 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.
  3. 1 2 3 4 5 "VizieR Detailed Page". Archived from the original on 2016-03-05. Retrieved 2012-07-13.
  4. 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.
  5. ↑ 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.
  6. 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 .
  7. ↑ 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.
  8. ↑ "3 Crt". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-11-13.


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