XO-5 b
A confirmed exoplanet orbiting XO-5.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 378 times Earth's mass.
- Temperature
- About 957 °C (1,754 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 4.2 Earth days.
Planet
- Radius
- 12.78 × Earth
- Mass
- 378.2 × Earth
- Density
- 1.06 g/cm³
- Equilibrium temperature
- 1,230 K
- Starlight received
- Unknown
- Orbital period
- 4.188 days
- Average distance from its star
- 0.0515 AU
Star
- Host star
- XO-5
- Spectral class
- G — sun-like
- Surface temperature
- 5,430 K
- Radius
- 1.13 × Sun
- Mass
- 1.04 × Sun
- Age
- Unknown
System
- Distance from Earth
- 900.9 light-years (276.2 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2008
- Method
- Transit
- Facility
- XO
Data from the NASA Exoplanet Archive, synced October 14, 2026.