HAT-P-12 b
A confirmed exoplanet orbiting HAT-P-12.
Compared with Earth
- Size
- About 11 times Earth's width.
- Mass
- About 67 times Earth's mass.
- Temperature
- About 690 °C (1,274 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 3.2 Earth days.
Planet
- Radius
- 10.75 × Earth
- Mass
- 67.06 × Earth
- Density
- 0.3192 g/cm³
- Equilibrium temperature
- 963 K
- Starlight received
- Unknown
- Orbital period
- 3.213 days
- Average distance from its star
- 0.0384 AU
Star
- Host star
- HAT-P-12
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,650 K
- Radius
- 0.701 × Sun
- Mass
- 0.733 × Sun
- Age
- 2.5 billion years
System
- Distance from Earth
- 465.6 light-years (142.8 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2009
- Method
- Transit
- Facility
- HATNet
Data from the NASA Exoplanet Archive, synced October 14, 2026.