23 Comae Berenices
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Coma Berenices |
Right ascension | 12h 34m 51.08058s[1] |
Declination | +22° 37′ 45.3303″[1] |
Apparent magnitude (V) | 4.773[2] |
Characteristics | |
Evolutionary stage | A0IV[3] |
U−B color index | −0.01[4] |
B−V color index | −0.03[4] |
Astrometry | |
Radial velocity (Rv) | −16.00 ± 1.8[5] km/s |
Proper motion (μ) | RA: −58.89[1] mas/yr Dec.: 28.31[1] mas/yr |
Parallax (π) | 10.52 ± 0.52[1] mas |
Distance | 310 ± 20 ly (95 ± 5 pc) |
Orbit[6] | |
Period (P) | 36.00 yr |
Semi-major axis (a) | 0.192″ |
Eccentricity (e) | 0.910 |
Inclination (i) | 119.1° |
Longitude of the node (Ω) | 199.9° |
Periastron epoch (T) | B 1960.81 |
Argument of periastron (ω) (secondary) | 14.7° |
Other designations | |
Database references | |
SIMBAD | data |
23 Comae Berenices (23 Com) is a binary star in the constellation Coma Berenices. Its apparent magnitude is 4.79.
References
- 1 2 3 4 5 van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- ↑ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- 1 2 "* 23 Com". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 September 2012.
- 1 2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Bibcode:1986EgUBV........0M.
- ↑ Kharchenko, N. V.; et al. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776.
- ↑ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 20 August 2017.
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