![]() HD 69830 c | |
Discovery | |
---|---|
Discovered by | C. Lovis et al. [1] |
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 [2] |
31.6158±0.0051 d [2] | |
2,453,469.6 ± 2.8 | |
221 ± 35 | |
Semi-amplitude | 2.6±0.1 m/s [2] |
Star | HD 69830 |
Physical characteristics | |
Mass | ≥12.09+0.55 −0.54 M🜨 [2] |
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. [1] However, other work has found that if it had formed as a gas giant, it would have stayed that way, [3] and it is now understood that planets this massive are rarely rocky. [4]
![]() HD 69830 c | |
Discovery | |
---|---|
Discovered by | C. Lovis et al. [1] |
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 [2] |
31.6158±0.0051 d [2] | |
2,453,469.6 ± 2.8 | |
221 ± 35 | |
Semi-amplitude | 2.6±0.1 m/s [2] |
Star | HD 69830 |
Physical characteristics | |
Mass | ≥12.09+0.55 −0.54 M🜨 [2] |
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. [1] However, other work has found that if it had formed as a gas giant, it would have stayed that way, [3] and it is now understood that planets this massive are rarely rocky. [4]