HD 10180 c is an exoplanet approximately 130 light-years away in the constellation Hydrus.

[2] It was discovered in 2010 using the radial velocity method.

[2] With a minimum mass comparable to that of Neptune,[3] it is of the class of planets known as Hot Neptunes.

[citation needed] 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.[citation needed]