HD 45350

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
Distance160 ± 8 ly
(49 ± 2 pc)
Absolute magnitude (MV)4.4[3]
Details
Mass1.02[2] M☉
Radius1.27[2] R☉
Surface gravity (log g)4.325[4] cgs
Temperature5754[2] K
Metallicity[Fe/H] = 0.29[2]
Age5.59 × 109 [2] years
Other designations
AG+38° 706, AGKR 5772, BD+39° 1637, GSC 02927-00323, HIP 30860, PPM 71672, SAO 59126, SPOCS 315, TYC 2927-323-1, UBV M 12095, uvby98 100045350.[1]
Database references
SIMBADdata

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]

The HD 45350 planetary system[6]
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. 1 2 3 4 5 6 7 8 9 HD 45350 -- Star, database entry, SIMBAD, accessed on line September 22, 2008.
  2. 1 2 3 4 5 6 Star : HD 45350, entry, Extrasolar Planets Encyclopaedia, accessed on line September 22, 2008.
  3. ↑ From apparent magnitude and parallax.
  4. ↑ 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.
  5. ↑ 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.
  6. ↑ 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.

Coordinates: 06h 28m 45.7103s, +38° 57′ 46.667″


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