HD 104985

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HD 104985
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 12h 05m 15.119s[1]
Declination +76° 54′ 20.65″[1]
Apparent magnitude (V) 5.79
Characteristics
Spectral type G9III
B−V color index 1.029
Astrometry
Proper motion (μ) RA: 147.68 ± 0.25[1] mas/yr
Dec.: –91.65 ± 0.19[1] mas/yr
Parallax (π) 10.30 ± 0.25[1] mas
Distance 317 ± 8 ly
(97 ± 2 pc)
Absolute magnitude (MV) 0.75
Details
Mass 1.5 M
Radius 10.87 ± 0.36 R
Luminosity 55.5 L
Surface gravity (log g) 0,354567676 g cgs
Temperature 4786 K
Metallicity [Fe/H] –0.35 dex
Age 2.95 ± 0.65 Gyr
Other designations
BD+77° 461, HIP 58952, HR 4609, NLTT 29548, SAO 7500.
Database references
SIMBAD data
Extrasolar Planets
Encyclopaedia
data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 104985 is a helium-fusing yellow giant star in the constellation of Camelopardalis. It is located 317 ly or 97 parsecs away from Earth.[1] In 2003, an extrasolar planet was discovered in orbit around the star.[2]

The HD 104985 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >8.3 MJ 0.95 199.505 ± 0.085 0.090 ± 0.009

See also[edit]

References[edit]

  1. ^ a b c d e f 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. Vizier catalog entry
  2. ^ Sato, Bun'ei et al. (2003). "A Planetary Companion to the G-Type Giant Star HD 104985". The Astrophysical Journal Letters 597 (2): L157–L160. Bibcode:2003ApJ...597L.157S. doi:10.1086/379967. 
  3. ^ Sato, Bun'ei et al. (2008). "Planetary Companions around Three Intermediate-Mass G and K Giants: 18 Delphini, ξ Aquilae and HD 81688". Publications of the Astronomical Society of Japan 60 (3): 539–550. arXiv:0802.2590. Bibcode:2008PASJ...60..539S. doi:10.1093/pasj/60.3.539. 

External links[edit]

Coordinates: Sky map 12h 05m 15.1178s, +76° 54′ 20.641″