HD 69830 c
HD 69830 c | |
| Discovery | |
|---|---|
| Discovered by | C. Lovis et al. |
| Discovery date | May 18, 2006 |
| Radial velocity | |
| Orbital characteristics | |
| 0.181 ± 0.004 AU (27,080,000 ± 600,000 km) | |
| Eccentricity | 0.03±0.027 |
| 31.6158±0.0051 d | |
| 2,453,469.6 ± 2.8 | |
| 221 ± 35 | |
| Semi-amplitude | 2.6±0.1 m/s |
| Star | HD 69830 |
| Physical characteristics | |
| Mass | ≥12.09+0.55 −0.54 M🜨 |
| Temperature | ~522 K |
HD 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and has a minimum mass 12 times that of Earth. Based on theoretical modeling in the 2006 discovery paper, it is likely to be a rocky planet, not a gas giant. However, other work has found that if it had formed as a gas giant, it would have stayed that way, and it is now understood that planets this massive are rarely rocky.