14 Andromedae b
14 Andromedae b (abbreviated 14 And b), formally named Spe /ˈspiː/, is an exoplanet approximately 249 light years away in the constellation of Andromeda.
Radial velocity changes over time of 14 Andromedae caused by the orbit of 14 Andromedae b. | |
| Discovery | |
|---|---|
| Discovered by | Sato et al. |
| Discovery date | July 2, 2008 |
| Doppler Spectroscopy | |
| Designations | |
| Spe | |
| Orbital characteristics | |
| 0.83 AU (124,000,000 km) | |
| Eccentricity | 0 |
| 185.84±0.23 d | |
| 2861.4 ± 1.5 | |
| Semi-amplitude | 100.0 ± 1.3 |
| Star | 14 Andromedae |
The 186-day period planet orbits about 83% the Earth-Sun distance from the giant star 14 Andromedae. It has a minimum mass 4.8 times the mass of Jupiter. The planet orbits with an eccentricity of 0.0094, which means the orbital distance over the course of its revolution varies by only 0.02 AU.
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