WASP-139 b
A confirmed exoplanet orbiting WASP-139.
Compared with Earth
- Size
- About 9 times Earth's width.
- Mass
- About 37 times Earth's mass.
- Temperature
- About 637 °C (1,178 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 5.9 Earth days.
Planet
- Radius
- 8.967 × Earth
- Mass
- 37.19 × Earth
- Density
- 0.31 g/cm³
- Equilibrium temperature
- 910 K
- Starlight received
- Unknown
- Orbital period
- 5.924 days
- Average distance from its star
- 0.062 AU
Star
- Host star
- WASP-139
- Spectral class
- G — sun-like
- Surface temperature
- 5,310 K
- Radius
- 0.8 × Sun
- Mass
- 0.92 × Sun
- Age
- 0.5 billion years
System
- Distance from Earth
- 693 light-years (212.5 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2016
- Method
- Transit
- Facility
- SuperWASP-South
Data from the NASA Exoplanet Archive, synced October 14, 2026.