WASP-81 b
A confirmed exoplanet orbiting WASP-81.
Compared with Earth
- Size
- About 16 times Earth's width.
- Mass
- About 232 times Earth's mass.
- Temperature
- About 1,350 °C (2,462 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 2.7 Earth days.
Planet
- Radius
- 16.02 × Earth
- Mass
- 231.7 × Earth
- Density
- 0.332 g/cm³
- Equilibrium temperature
- 1,623 K
- Starlight received
- Unknown
- Orbital period
- 2.716 days
- Average distance from its star
- 0.03908 AU
Star
- Host star
- WASP-81
- Spectral class
- G — sun-like
- Surface temperature
- 5,870 K
- Radius
- 1.283 × Sun
- Mass
- 1.08 × Sun
- Age
- Unknown
System
- Distance from Earth
- 1,300 light-years (398.5 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- Multiple Facilities
Data from the NASA Exoplanet Archive, synced October 14, 2026.