GJ 3473 b
A confirmed exoplanet orbiting GJ 3473.
Compared with Earth
- Size
- About 1.3 times Earth's width.
- Mass
- About 1.9 times Earth's mass.
- Temperature
- About 500 °C (932 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 59 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 1.2 Earth days.
Planet
- Radius
- 1.264 × Earth
- Mass
- 1.86 × Earth
- Density
- 5.03 g/cm³
- Equilibrium temperature
- 773 K
- Starlight received
- 59.4 × Earth
- Orbital period
- 1.198 days
- Average distance from its star
- 0.01589 AU
Star
- Host star
- GJ 3473
- Spectral class
- M — red dwarf
- Surface temperature
- 3,347 K
- Radius
- 0.364 × Sun
- Mass
- 0.36 × Sun
- Age
- Unknown
System
- Distance from Earth
- 89.25 light-years (27.36 parsecs)
- Stars in system
- 2
- Known planets
- 2
Discovery
- Year
- 2020
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.