GJ 1214 b
A confirmed exoplanet orbiting GJ 1214.
Compared with Earth
- Size
- About 2.7 times Earth's width.
- Mass
- About 8.4 times Earth's mass.
- Temperature
- About 294 °C (561 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 17 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 1.6 Earth days.
Planet
- Radius
- 2.733 × Earth
- Mass
- 8.41 × Earth
- Density
- 2.26 g/cm³
- Equilibrium temperature
- 567 K
- Starlight received
- 17.2 × Earth
- Orbital period
- 1.58 days
- Average distance from its star
- 0.01505 AU
Star
- Host star
- GJ 1214
- Spectral class
- M — red dwarf
- Surface temperature
- 3,101 K
- Radius
- 0.2162 × Sun
- Mass
- 0.182 × Sun
- Age
- Unknown
System
- Distance from Earth
- 47.76 light-years (14.64 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2009
- Method
- Transit
- Facility
- MEarth Project
Data from the NASA Exoplanet Archive, synced October 14, 2026.