TOI-122 b
A confirmed exoplanet orbiting TOI-122.
Compared with Earth
- Size
- About 2.7 times Earth's width.
- Temperature
- About 198 °C (388 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 8.8 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 5.1 Earth days.
Planet
- Radius
- 2.72 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 471 K
- Starlight received
- 8.8 × Earth
- Orbital period
- 5.078 days
- Average distance from its star
- 0.0392 AU
Star
- Host star
- TOI-122
- Spectral class
- M — red dwarf
- Surface temperature
- 3,403 K
- Radius
- 0.334 × Sun
- Mass
- 0.312 × Sun
- Age
- 2 billion years
System
- Distance from Earth
- 202.6 light-years (62.12 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2020
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.