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 ![]() | |
Discovery status | Published[2] | |
Database references | ||
Extrasolar Planets Encyclopaedia | data | |
SIMBAD | data | |
Exoplanet Archive | data | |
Open Exoplanet Catalogue | 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
- ↑ 1.0 1.1 1.2 1.3 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
- ↑ 2.0 2.1 2.2 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.
- ↑ 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
- "HD". Exoplanets.
- Orbit simulation
Coordinates: 12h 05m 15.1178s, +76° 54′ 20.641″