HD 10180 c
Orbits of the inner planets of the HD 10180 planetary system, using the orbital configuration from an eight-body (the star and seven planets) Newtonian model taking into account tidal dissipation. | |
| Discovery | |
|---|---|
| Discovery date | 24 August 2010 |
| Orbital characteristics | |
| 0.0641 ± 0.0010 AU (9,590,000 ± 150,000 km) | |
| Eccentricity | 0.073±0.031 |
| 5.75969±0.00028 d | |
Average orbital speed | 136 |
| 328±24 | |
| Star | HD 10180 |
| Physical characteristics | |
| Mass | >0.0416±0.0014 MJ |
HD 10180 c is an exoplanet approximately 130 light-years away in the constellation Hydrus. It was discovered in 2010 using the radial velocity method. With a minimum mass comparable to that of Neptune, it is of the class of planets known as Hot Neptunes. Dynamical simulations suggest that if the mass gradient was any more than a factor of two, the system would not be stable.
While planet c does not exist in any mean motion resonances, both planets with adjacent orbits (b and d) share near resonances with c.