HD 45350
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 28m 45.7103s[1] |
| Declination | +38° 57′ 46.667″[1] |
| Apparent magnitude (V) | 7.88[1] |
| Characteristics | |
| Spectral type | G5 IV[2] |
| B−V color index | 0.74[1] |
| Astrometry | |
| Radial velocity (Rv) | −21.3 ± 0.2[1] km/s |
| Proper motion (μ) | RA: −43.80 ± 1.03[1] mas/yr Dec.: −53.45 ± 0.64[1] mas/yr |
| Parallax (π) | 20.43 ± 0.98[1] mas |
| Distance | 160 ± 8 ly (49 ± 2 pc) |
| Absolute magnitude (MV) | 4.4[3] |
| Details | |
| Mass | 1.02[2] M☉ |
| Radius | 1.27[2] R☉ |
| Surface gravity (log g) | 4.325[4] cgs |
| Temperature | 5754[2] K |
| Metallicity | [Fe/H] = 0.29[2] |
| Age | 5.59 × 109 [2] years |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 45350 is an 8th magnitude star located approximately 160 light-years away in the constellation of Auriga. It is a yellow subgiant (spectral type G5 IV), a Sun-like star that is finishing hydrogen fusion in its core. Although slightly cooler, it is brighter, although not much considering its subgiant status. However, the star is very old and will soon start to expand becoming finally a red giant.
Planetary system
In January 2005, the discovery of a very eccentric extrasolar planet orbiting the star was announced by the California and Carnegie Planet Search team.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.79 ± 0.14 MJ | 1.92 ± 0.067 | 963.6 ± 3.4 | 0.778 ± 0.009 | — | — |
See also
References
- 1 2 3 4 5 6 7 8 9 HD 45350 -- Star, database entry, SIMBAD, accessed on line September 22, 2008.
- 1 2 3 4 5 6 Star : HD 45350, entry, Extrasolar Planets Encyclopaedia, accessed on line September 22, 2008.
- ↑ From apparent magnitude and parallax.
- ↑ Table 2, Catalog of Nearby Exoplanets, R. P. Butler et al., The Astrophysical Journal 646, #1 (July 2006), pp. 505–522, Bibcode: 2006ApJ...646..505B, doi:10.1086/504701.
- ↑ Five New Extrasolar Planets, Geoffrey W. Marcy, R. Paul Butler, Steven S. Vogt, et al., Astrophysical Journal 619, #1 (January 20, 2005), pp. 570–584, Bibcode: 2005ApJ...619..570M, doi:10.1086/426384.
- ↑ Table 2, combined solution, Determination of the Orbit of the Planetary Companion to the Metal-Rich Star HD 45350, Michael Endl, William D. Cochran, Robert A. Wittenmyer, and Artie P. Hatzes, Astronomical Journal 131, #6 (June 2006), pp. 3131–3134, Bibcode: 2006AJ....131.3131E, doi:10.1086/503746.
External links
- "Notes for star HD 45350". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-20.
- "Image HD 45350". SIMBAD. Retrieved 2008-10-17.
Coordinates: 
06h 28m 45.7103s, +38° 57′ 46.667″
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