Pollux b
Pollux b, also designated β Geminorum b (Latinized to Beta Geminorum b, abbreviated, β Gem b) and HD 62509 b, formally named Thestias /ˈθɛstiəs/, is an extrasolar planet approximately 34 light-years away in the constellation of Gemini (the Twins). This planet was discovered orbiting the star Pollux in 2006 by astronomer Artie P. Hatzes, confirming his hypothesis originally published in 1993. The planet has at least twice the mass of Jupiter. It moves around Pollux in 1.61 years at a distance of 1.64 AU in a nearly circular orbit.
Pollux b | |
| Discovery | |
|---|---|
| Discovered by | Hatzes et al. |
| Discovery site | United States |
| Discovery date | 16 June 2006 |
| Radial velocity | |
| Orbital characteristics | |
| 1.64 ± 0.27 AU (245 ± 40 million km) | |
| Eccentricity | 0.02 ± 0.03 |
| 589.64 ± 0.81 d 1.61432 ± 0.00222 y | |
| 2,447,739.02 ± 4.5 | |
| Semi-amplitude | 41.0 ± 1.6 |
| Star | Pollux |
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