| HD 104985 b / Meztli | |
| Discoverer: | Sato et al. |
| Discovery Site: | Okayama Planet Search Program  Japan |
| Discovered: | June 26, 2003 |
| Discovery Method: | radial velocity |
| Apsis: | astron |
| Aphelion: | 0.8AU |
| Perihelion: | 0.76AU |
| Semimajor: | 0.78AU |
| Eccentricity: | 0.03 ± 0.02 |
| Period: | 198.2 ± 0.3 d 0.5426 ± 0.0008 y |
| Avg Speed: | 43 |
| Time Periastron: | 2451990 ± 20 |
| Arg Peri: | 310 ± 30 |
| Semi-Amplitude: | 161 ± 2 |
HD 104985 b, also named Meztli, is an extrasolar planet approximately 97 parsecs (317 lys) from the Sun. 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.
Following its discovery in 2003 the planet was designated HD 104985 b. In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.[1] The process involved public nomination and voting for the new names.[2] In December 2015, the IAU announced the winning name was Meztli for this planet.[3] The winning name was submitted by the Sociedad Astronomica Urania of Morelos, Mexico. 'Meztli' was the Aztec goddess of the Moon.[4]