Astronomy:HD 231701 b
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Short description: Exoplanet that orbits HD 231701 in the constellation of Sagitta
| Discovery | |
|---|---|
| Discovered by | Fischer et al. |
| Discovery site |  California , United States |
| Discovery date | April 10, 2007 |
| Radial velocity | |
| Orbital characteristics | |
| 0.567±0.053 AU | |
| Eccentricity | 0.13±0.032[1] |
| Orbital period | 141.63±0.067[1] d |
| astron|astron|helion}} | 2463330.6±5.3[1] |
| 68±14[1] | |
| Semi-amplitude | 39.2±1.2[1] |
| Star | HD 231701 |
HD 231701 b is an extrasolar planet approximately 356 light years away in the constellation of Sagitta. This planet orbits at 0.55 AU from the star HD 231701 with eccentricity 0.19. Based on its high mass of 1.08 MJ, the planet is probably a gas giant, meaning the planet has no solid surface and have composition similar to Solar System's outer planets.[2]
The planet HD 231701 b is named Babylonia. The name was selected in the NameExoWorlds campaign by Iraq, during the 100th anniversary of the IAU. Babylonia was a key kingdom in ancient Mesopotamia from the 18th to 6th centuries BC.[3][4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Ment, Kristo et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal 156 (5): 213. doi:10.3847/1538-3881/aae1f5. Bibcode: 2018AJ....156..213M.
- ↑ Fischer, Debra A. et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal 669 (2): 1336–1344. doi:10.1086/521869. Bibcode: 2007ApJ...669.1336F.
- ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
- ↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/.
External links
Coordinates: 
19h 32m 04.1611s, +16° 28′ 27.444″
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