HD 104985 b

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]
Distance317 ± 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
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

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. 1 2 3 4 5 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. 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.
  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.
  4. ↑ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
  5. ↑ NameExoWorlds The Process
  6. ↑ Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
  7. ↑ NameExoWorlds The Approved Names
  • "HD". Exoplanets.
  • Orbit simulation

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


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