HD 13931 b
| Discovery | |
|---|---|
| Discovered by | Howard et al. |
| Discovery site | Keck Observatory |
| Discovery date | November 13, 2009 |
| Radial velocity | |
| Orbital characteristics | |
| 5.15 ± 0.29 AU (770,000,000 ± 43,000,000 km) | |
| Eccentricity | 0.02 ± 0.05 |
| 4218 ± 388 d ~11.55 y | |
Average orbital speed | 13.3 ± 2.2 |
| 24494 ± 904 | |
| 290 ± 78 | |
| Semi-amplitude | 22.8 ± 3.0 |
| Star | HD 13931 |
HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 155 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 Gm. The planet's eccentricity (0.02) is about the same as Earth.[1] The orbital distance for this planet ranges from 5.05 to 5.25 AU. This planet was discovered by using radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009.
See also[]
Other planets that were discovered or confirmed on November 13, 2009:
- HD 34445 b
- HD 126614 Ab
- Gliese 179 b
- QS Virginis b
References[]
- ^ Howard, Andrew W.; et al. (2010). "The California Planet Survey. I. Four New Giant Exoplanets". The Astrophysical Journal. 721 (2): 1467–1481. arXiv:1003.3488. Bibcode:2010ApJ...721.1467H. doi:10.1088/0004-637X/721/2/1467. S2CID 14147776.
- Jean Schneider (2011). "Notes for Planet HD 13931 b". Extrasolar Planets Encyclopaedia. Retrieved 29 September 2011.
Coordinates: 
02h 16m 47.3791s, +43° 46′ 22.784″
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Categories:
- Exoplanets discovered in 2009
- Exoplanets detected by radial velocity
- Giant planets
- Andromeda (constellation)
- Exoplanet stubs