The HD 240210 system contains 1 exoplanet. It is located 1214.62 light years away from the solar system.
| Mass | 0.82 solar masses |
| Radius | 25.46 solar radiae |
| Temperature | 4297 kelvin |
| Stellar Metallicity | -0.18 decimal exponent |
| Age | 5.085 billion years |
At more than 50 Earth masses, HD 240210 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 1655.820 Earth masses |
| Density | 4.340 grams per cubic centimeter |
| Radius | 12.800 Earth radiae |
| Semi-major Axis | 1.16 AU |
| Eccentricity | 0.15 |
| Orbital Period | 501.750 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | McDonald Observatory |
| Discovery Telescope | 9.2 m Hobby-Eberly Telescope |
| Discovery Instrument | High Resolution Spectrograph |
| Discovery Date | 2009-12 |
| Reference | Niedzielski et al. 2009 |