XO-1 b
A confirmed exoplanet orbiting XO-1.
Compared with Earth
- Size
- About 13 times Earth's width.
- Mass
- About 264 times Earth's mass.
- Year
- A year here lasts about 3.9 Earth days.
Planet
- Radius
- 12.78 × Earth
- Mass
- 263.8 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 3.942 days
- Average distance from its star
- Unknown
Star
- Host star
- XO-1
- Spectral class
- G — sun-like
- Surface temperature
- 5,750 K
- Radius
- 0.88 × Sun
- Mass
- 0.88 × Sun
- Age
- Unknown
System
- Distance from Earth
- 533.4 light-years (163.6 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2006
- Method
- Transit
- Facility
- XO
Data from the NASA Exoplanet Archive, synced October 14, 2026.