HD 104985 b

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HD 104985 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 104985
Constellation Camelopardalis
Right ascension (α) 12h 05m 15.119s[1]
Declination (δ) +76° 54′ 20.65″[1]
Distance 317 ± 8[1] ly
(97 ± 2[1] pc)
Spectral type G9III
Orbital elements
Semimajor axis (a) 0.78 AU
Periastron (q) 0.76 AU
Apastron (Q) 0.80 AU
Eccentricity (e) 0.03 ± 0.02
Orbital period (P) 198.2 ± 0.3 d
(0.5426 ± 0.0008 y)
Orbital speed (υ) 43 km/s
Argument of
periastron
(ω) 310 ± 30°
Time of periastron (T0) 2451990 ± 20 JD
Semi-amplitude (K) 161 ± 2 m/s
Physical characteristics
Minimum mass (m sin i) 6.33 MJ
(2010 M)
Discovery information
Discovery date June 26, 2003
Discoverer(s) Sato et al.[2]
Discovery method radial velocity
Discovery site Okayama Planet
Search Program

 Japan
Discovery status Published[2]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data

HD 104985 b is an extrasolar planet that takes 198 days to orbit at the distance of 0.78 AU. It is definitely a gas giant since it has mass 61/3 times Jupiter.[2][3]

References[edit]

  1. ^ a b c d 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. ^ a b c 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″