TOI-198 b
A confirmed exoplanet orbiting TOI-198.
Compared with Earth
- Size
- About 1.4 times Earth's width.
- Mass
- About 3.2 times Earth's mass.
- Temperature
- About 183 °C (361 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 7.2 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 10 Earth days.
Planet
- Radius
- 1.36 × Earth
- Mass
- 3.17 × Earth
- Density
- 6.89 g/cm³
- Equilibrium temperature
- 456 K
- Starlight received
- 7.2 × Earth
- Orbital period
- 10.22 days
- Average distance from its star
- 0.0675 AU
Star
- Host star
- TOI-198
- Spectral class
- M — red dwarf
- Surface temperature
- 3,801 K
- Radius
- 0.418 × Sun
- Mass
- 0.417 × Sun
- Age
- 1 billion years
System
- Distance from Earth
- 77.38 light-years (23.73 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2023
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.