| Discovery | |
|---|---|
| Discovered by | Apps et al. |
| Discovery site | Keck Observatory |
| Discovery date | January 7, 2010 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| Apastron | 0.46 AU (69,000,000 km) |
| Periastron | 0.25 AU (37,000,000 km) |
| 0.36 AU (54,000,000 km) | |
| Eccentricity | 0.29 |
| 111.7 ± 0.7 d 0.306 y | |
Average orbital speed | 35 |
| 2454980.3 ± 1.2 | |
| 287.4 ± 3.2 | |
| Star | HIP 79431 |
HIP 79431 b is an extrasolar planet discovered by the W. M. Keck Observatory in 2010. The planet is found in an M type dwarf star catalogued as HIP 79431, and is located within the Scorpius constellation approximately 47 light years away from the Earth. Its orbital period lasts about 111.7 days and has an orbital eccentricity of 0.29. The planet is the 6th giant planet to be detected in the Doppler surveys of M dwarfs and is considered to be one of the most massive planets found around M dwarf stars.[1][2][3][4]
The planet HIP 79431 b is named Barajeel. The name was selected in the NameExoWorlds campaign by the United Arab Emirates, during the 100th anniversary of the IAU. A barajeel is a wind tower used to direct the flow of the wind so that air can be recirculated as a form of air conditioning.[5][6]
- ^ "M Dwarf Planets". Deep Fly. Archived from the original on 2010-03-01. Retrieved 2010-02-09.
- ^ "Planet : HIP 79431 b". Extrasolar Planets Encyclopaedia. Retrieved 2010-02-09.
- ^ Kevin Apps; Clubb; Fischer; Eric Gaidos; Howard; Johnson; Marcy; Howard Isaacson; Giguere (2010). "M2K A Jovian Mass Planet around M3V star HIP 79431". Publications of the Astronomical Society of the Pacific. 122 (888): 156–161. arXiv:1001.1174. Bibcode:2010PASP..122..156A. doi:10.1086/651058. S2CID 119186731.
- ^ "Estrella: HIP 79431". NASA. Archived from the original on 2010-07-03. Retrieved 2010-02-09.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.