WASP-33 b
A confirmed exoplanet orbiting WASP-33.
Compared with Earth
- Size
- About 18 times Earth's width.
- Mass
- About 665 times Earth's mass.
- Temperature
- About 2,509 °C (4,547 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 1.2 Earth days.
Planet
- Radius
- 17.86 × Earth
- Mass
- 665.2 × Earth
- Density
- 0.689 g/cm³
- Equilibrium temperature
- 2,782 K
- Starlight received
- Unknown
- Orbital period
- 1.22 days
- Average distance from its star
- 0.0239 AU
Star
- Host star
- WASP-33
- Spectral class
- A — white
- Surface temperature
- 7,430 K
- Radius
- 1.444 × Sun
- Mass
- 1.495 × Sun
- Age
- Unknown
System
- Distance from Earth
- 397.7 light-years (121.9 parsecs)
- Stars in system
- 2
- Known planets
- 1
Discovery
- Year
- 2010
- Method
- Transit
- Facility
- SuperWASP
Data from the NASA Exoplanet Archive, synced October 14, 2026.