TOI-789 b
A confirmed exoplanet orbiting TOI-789.
Compared with Earth
- Size
- About 1.2 times Earth's width.
- Mass
- About 3.7 times Earth's mass.
- Temperature
- About 175 °C (347 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 9.5 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 5.4 Earth days.
Planet
- Radius
- 1.18 × Earth
- Mass
- 3.7 × Earth
- Density
- Unknown
- Equilibrium temperature
- 448 K
- Starlight received
- 9.5 × Earth
- Orbital period
- 5.447 days
- Average distance from its star
- 0.043 AU
Star
- Host star
- TOI-789
- Spectral class
- M — red dwarf
- Surface temperature
- 3,471 K
- Radius
- 0.371 × Sun
- Mass
- 0.358 × Sun
- Age
- Unknown
System
- Distance from Earth
- 141.6 light-years (43.41 parsecs)
- Stars in system
- 1
- Known planets
- 3
Discovery
- Year
- 2026
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.