B Eridani

Last updated
b Eridani
Eridanus constellation map.svg
Red circle.svg
Location of b Eridani (circled)
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Eridanus [1]
Right ascension 04h 56m 24.18609s [2]
Declination −05° 10′ 16.8710″ [2]
Apparent magnitude  (V)5.50 [1]
Characteristics
Spectral type B5III [3]
B−V colour index −0.123±0.004 [1]
Astrometry
Radial velocity (Rv)24±4.3 [4] km/s
Proper motion (μ)RA: −6.395 mas/yr [2]
Dec.: −1.809 mas/yr [2]
Parallax (π)4.5440±0.1145  mas [2]
Distance 720 ± 20  ly
(220 ± 6  pc)
Absolute magnitude  (MV)−1.23 [1]
Details
Aa
Mass 5.69 [5]   M☉
Ab
Mass 1.46 [5]   M☉
Other designations
b Eri, 62 Eridani, BD−05 1091, GC 5894, HD 31512, HIP 22958, HR 1582, SAO 149924, PPM 214891, TYC 5899-1192-1 [6]
Database references
SIMBAD Star

b Eridani (62 Eri) is a double star located in the Eridanus constellation and is approximately 720 light-years away. It is a very hot blue giant star with the primary component having the spectral class B6V and an apparent magnitude of +5.49.

It moves within the galaxy at a speed of 24.2 km/sec relative to the Sun. Its distance from the galactic center is estimated to be between 24,700 and 29,700 light-years. [7]

References

  1. 1 2 3 4 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.
  2. 1 2 3 4 5 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. ↑ Houk, N.; Swift, C. (1999). Michigan catalogue of two-dimensional spectral types for the HD Stars. Michigan Spectral Survey. Vol. 5. Ann Arbor: Deptment of Astronomy, University of Michigan. Bibcode:1999MSS...C05....0H.
  4. ↑ Gontcharov, G. A. (2006). "Pulkovo compilation of radial velocities for 35495 stars in a common system". Astronomy Letters . 32 (11): 759–771. arXiv: 1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID   119231169.
  5. 1 2 Tokovinin, Andrei (2018). "The Updated Multiple Star Catalog". The Astrophysical Journal Supplement Series. 235 (1): 6. arXiv: 1712.04750 . Bibcode:2018ApJS..235....6T. doi: 10.3847/1538-4365/aaa1a5 .
  6. ↑ "b Eridani". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2025-09-05.
  7. ↑ 62 Eridani, a blue giant star in Eridanus [ dead link ]


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