XO-4 b
A confirmed exoplanet orbiting XO-4.
Compared with Earth
- Size
- About 14 times Earth's width.
- Mass
- About 451 times Earth's mass.
- Year
- A year here lasts about 4.1 Earth days.
Planet
- Radius
- 14.01 × Earth
- Mass
- 451.3 × Earth
- Density
- Unknown
- Equilibrium temperature
- Unknown
- Starlight received
- Unknown
- Orbital period
- 4.125 days
- Average distance from its star
- Unknown
Star
- Host star
- XO-4
- Spectral class
- F — yellow-white
- Surface temperature
- 6,397 K
- Radius
- 1.45 × Sun
- Mass
- 1.1 × Sun
- Age
- Unknown
System
- Distance from Earth
- 889.3 light-years (272.7 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2010
- Method
- Transit
- Facility
- Lowell Observatory
Data from the NASA Exoplanet Archive, synced October 14, 2026.