HD 68988 c
HD 68988 c is an exoplanet located approximately 192 light-years away in the constellation of Ursa Major, orbiting the star HD 68988. The parameters including period and eccentricity are highly uncertain. The semimajor axis would be 5.32 AU with an orbital period of 4100 ± 7300 days (11 years).[1][2]
| Discovery | |
|---|---|
| Discovered by | Wright et al. |
| Discovery site | California, US |
| Discovery date | November 2006 |
| Radial velocity | |
| Orbital characteristics | |
| Apastron | 5.37 AU (803,000,000 km) |
| Periastron | 5.27 AU (788,000,000 km) |
| 5.32 AU (796,000,000 km) | |
| Eccentricity | 0.01 ± 0.27 |
| 4100 ± 7300 d 11 y | |
Average orbital speed | 14 |
| 2452730 ± 510 | |
| 129 | |
| Semi-amplitude | 60 ± 11 |
| Star | HD 68988 |
See also
- HD 68988 b
- List of unconfirmed exoplanets
References
- Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
- Wright, J. T.; et al. (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars". The Astrophysical Journal. 657 (1): 533–545. arXiv:astro-ph/0611658. Bibcode:2007ApJ...657..533W. doi:10.1086/510553.
External links
- "Notes for planet HD 68988 c". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-25.
- "HD 68988". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-08-25.
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