HAT-P-39 b
A confirmed exoplanet orbiting HAT-P-39.
Compared with Earth
- Size
- About 18 times Earth's width.
- Mass
- About 190 times Earth's mass.
- Temperature
- About 1,479 °C (2,694 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 3.5 Earth days.
Planet
- Radius
- 17.61 × Earth
- Mass
- 190.4 × Earth
- Density
- 0.19 g/cm³
- Equilibrium temperature
- 1,752 K
- Starlight received
- Unknown
- Orbital period
- 3.544 days
- Average distance from its star
- 0.0509 AU
Star
- Host star
- HAT-P-39
- Spectral class
- F — yellow-white
- Surface temperature
- 6,430 K
- Radius
- 1.625 × Sun
- Mass
- 1.404 × Sun
- Age
- Unknown
System
- Distance from Earth
- 2,273 light-years (697 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2012
- Method
- Transit
- Facility
- HATNet
Data from the NASA Exoplanet Archive, synced October 14, 2026.