The HD 145457 system contains 1 exoplanet. It is located 441.26 light years away from the solar system.
| Mass | 1.23 solar masses |
| Radius | 10.52 solar radiae |
| Temperature | 4769 kelvin |
| Stellar Metallicity | -0.25 decimal exponent |
| Age | 2.605 billion years |
At more than 50 Earth masses, HD 145457 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 708.761 Earth masses |
| Density | 1.660 grams per cubic centimeter |
| Radius | 13.300 Earth radiae |
| Semi-major Axis | 0.76 AU |
| Eccentricity | 0.11 |
| Orbital Period | 176.300 days |
| Discovery Method | Radial Velocity |
| Discovery Facility | Subaru Telescope |
| Discovery Telescope | 8.2 m Subaru Telescope |
| Discovery Instrument | HDS Spectrograph |
| Discovery Date | 2010-08 |
| Reference | Sato et al. 2010 |