XO-2 S b
A confirmed exoplanet orbiting XO-2 S.
Compared with Earth
- Mass
- About 83 times Earth's mass.
- Year
- A year here lasts about 18 Earth days.
Planet
- Radius
- Unknown
- Mass
- 82.64 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 18.22 days
- Average distance from its star
- 0.1347 AU
Star
- Host star
- XO-2 S
- Spectral class
- G — sun-like
- Surface temperature
- 5,325 K
- Radius
- 1.02 × Sun
- Mass
- 0.98 × Sun
- Age
- Unknown
System
- Distance from Earth
- 493.8 light-years (151.4 parsecs)
- Stars in system
- 2
- Known planets
- 4
Discovery
- Year
- 2014
- Method
- Radial Velocity
- Facility
- Roque de los Muchachos Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.