WASP-197 b
A confirmed exoplanet orbiting WASP-197.
Compared with Earth
- Size
- About 14 times Earth's width.
- Mass
- About 403 times Earth's mass.
- Temperature
- About 1,392 °C (2,537 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 1,276 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 5.2 Earth days.
Planet
- Radius
- 14.45 × Earth
- Mass
- 403.3 × Earth
- Density
- 0.74 g/cm³
- Equilibrium temperature
- 1,665 K
- Starlight received
- 1,276 × Earth
- Orbital period
- 5.167 days
- Average distance from its star
- 0.065 AU
Star
- Host star
- WASP-197
- Spectral class
- F — yellow-white
- Surface temperature
- 6,050 K
- Radius
- 2.112 × Sun
- Mass
- 1.36 × Sun
- Age
- 2.6 billion years
System
- Distance from Earth
- 1,578 light-years (483.7 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2025
- Method
- Transit
- Facility
- SuperWASP
Data from the NASA Exoplanet Archive, synced October 14, 2026.