HD 104985 b

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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
(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
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]


External links[edit]

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