HD 104985 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| 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 | ||
| Semi-major 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 | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 104985 b, also named Meztli, is an extrasolar planet approximately 97 parsecs (317 lys) from the Sun[1] in the constellation of Camelopardalis.
The 198-day period planet orbits the yellow giant star HD 104985 (Tonatiuh) at a distance of 0.78 AU. With a mass 61/3 times Jupiter it is a gas giant.[2][3]
Following its discovery in 2003[2] the planet was designated HD 104985 b. In July 2014 the International Astronomical Union launched a process for giving proper names to certain exoplanets and their host stars.[4] The process involved public nomination and voting for the new names.[5] In December 2015, the IAU announced the winning name was Meztli for this planet.[6] The winning name was submitted by the Sociedad Astronomica Urania of Morelos, Mexico. 'Meztli' was the Aztec goddess of the Moon.[7]
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357.Vizier catalog entry - 1 2 3 4 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. Bibcode:2008PASJ...60..539S. arXiv:0802.2590 . doi:10.1093/pasj/60.3.539.
- ↑ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
- ↑ NameExoWorlds The Process
- ↑ Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
- ↑ NameExoWorlds The Approved Names
External links
- "HD". Exoplanets.
- Orbit simulation
Coordinates: 
12h 05m 15.1178s, +76° 54′ 20.641″