WASP-21 b
A confirmed exoplanet orbiting WASP-21.
Compared with Earth
- Size
- About 12 times Earth's width.
- Mass
- About 95 times Earth's mass.
- Year
- A year here lasts about 4.3 Earth days.
Planet
- Radius
- 11.99 × Earth
- Mass
- 95.35 × Earth
- Density
- 0.32 g/cm³
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 4.322 days
- Average distance from its star
- 0.052 AU
Star
- Host star
- WASP-21
- Spectral class
- Unknown
- Surface temperature
- Unknown
- Radius
- Unknown
- Mass
- Unknown
- Age
- Unknown
System
- Distance from Earth
- 842.9 light-years (258.4 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2010
- Method
- Transit
- Facility
- SuperWASP
Data from the NASA Exoplanet Archive, synced October 14, 2026.