HD 23089
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis |
| Right ascension | 03h 46m 02.33087s[1] |
| Declination | +63° 20′ 42.1639″[1] |
| Apparent magnitude (V) | 4.79[2] |
| Characteristics | |
| Spectral type | G2II-III + B9V[3] |
| U−B color index | +0.24[2] |
| B−V color index | +0.79[2] |
| R−I color index | 0.53 |
| Astrometry | |
| Radial velocity (Rv) | -2.4[4] km/s |
| Proper motion (μ) | RA: -0.94[1] mas/yr Dec.: -8.41[1] mas/yr |
| Parallax (π) | 4.08 ± 0.66[1] mas |
| Distance | approx. 800 ly (approx. 250 pc) |
| Orbit[5] | |
| Period (P) | 6,150 d |
| Eccentricity (e) | 0.67 |
| Details | |
| HD 23089 A | |
| Surface gravity (log g) | 2.88[6] cgs |
| Temperature | 4,750[6] K |
| Metallicity [Fe/H] | −0.28[6] dex |
| HD 23089 B | |
| Rotational velocity (v sin i) | 18[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 23089 is a spectroscopic binary star in the northern constellation of Camelopardalis. The system consists of a cooler giant star and hotter main sequence companion,[3] with the pair orbiting each other every 6,150 days.[5]
References
- 1 2 3 4 5 van Leeuwen, F. (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
- 1 2 3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M
- 1 2 Parsons, Sidney B.; Ake, Thomas B. (November 1998), "Ultraviolet and Optical Studies of Binaries with Luminous Cool Primaries and Hot Companions. V. The Entire IUE Sample", The Astrophysical Journal Supplement Series 119 (1): 83–104, Bibcode:1998ApJS..119...83P, doi:10.1086/313152
- ↑ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W
- 1 2 Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x
- 1 2 3 McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi:10.1086/191527
- ↑ Abt, Helmut A.; Morrell, Nidia I. (July 1995), "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars", Astrophysical Journal Supplement 99: 135, Bibcode:1995ApJS...99..135A, doi:10.1086/192182
External links
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