Astronomy:HR 7722 b
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Short description: Extrasolar planet in the constellation Capricornus
| Discovery | |
|---|---|
| Discovery site | La Silla Observatory |
| Radial velocity (HARPS) | |
| Orbital characteristics | |
| Star | HR 7722 |
| Physical characteristics | |
| Physics | 332° K |
HR 7722 b is an exoplanet orbiting the star HR 7722.[1] It orbits its parent star with a semimajor axis of 0.32 ± 0.005 AU, an eccentricity of 0.13 ± 0.04. and an orbital period of 74.72 days.[2]
The Neptune-sized planet has at least 21 times the mass of Earth[3] and 3 to 4 times its diameter.
HR 7722 b was discovered on 1 November 2010 and lies within the inner edge of the habitable zone of HR 7722.
See also
References
- ↑ Pepe, F. (2011). "The HARPS search for Earth-like planets in the habitable zone: I – Very low-mass planets around HD20794, HD85512 and HD192310". Astronomy & Astrophysics 534: A58. doi:10.1051/0004-6361/201117055. Bibcode: 2011A&A...534A..58P.
- ↑ Open Exoplanet Catalogue, Gl 785b
- ↑ Andrew W. Howard, The NASA-UC Eta-Earth Program: III. A Super-Earth orbiting HD 97658 and a Neptune-mass planet orbiting Gl 785, et al.
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