HD 69830 c
HD 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and likely to be a rocky planet, not a gas giant.[1] If it had formed as a gas giant, it would have stayed that way.[2]
 HD 69830 c | |
| Discovery | |
|---|---|
| Discovered by | C. Lovis et al.[1] |
| Discovery date | May 18, 2006 |
| Radial velocity | |
| Orbital characteristics | |
| 0.186 AU (27,800,000 km) | |
| Eccentricity | 0.13 ± 0.06 |
| 31.56 ± 0.04 d | |
| 2,453,469.6 ± 2.8 | |
| 221 ± 35 | |
| Semi-amplitude | 2.66 ± 0.16 |
| Star | HD 69830 |
| Physical characteristics | |
| Temperature | ~522 K |
References
- Lovis, Christophe; et al. (2006). "An extrasolar planetary system with three Neptune-mass planets" (PDF). Nature. 441 (7091): 305–309. arXiv:astro-ph/0703024. Bibcode:2006Natur.441..305L. doi:10.1038/nature04828. PMID 16710412.
- H. Lammer; et al. (2007). "The impact of nonthermal loss processes on planet masses from Neptunes to Jupiters" (PDF). Geophysical Research Abstracts. 9 (7850).
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