TOI-172 b
A confirmed exoplanet orbiting TOI-172.
Compared with Earth
- Size
- About 11 times Earth's width.
- Mass
- About 1,723 times Earth's mass.
- Temperature
- About 925 °C (1,697 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 299 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 9.5 Earth days.
Planet
- Radius
- 10.82 × Earth
- Mass
- 1,723 × Earth
- Density
- 7.53 g/cm³
- Equilibrium temperature
- 1,198 K
- Starlight received
- 299 × Earth
- Orbital period
- 9.477 days
- Average distance from its star
- 0.0914 AU
Star
- Host star
- TOI-172
- Spectral class
- G — sun-like
- Surface temperature
- 5,645 K
- Radius
- 1.777 × Sun
- Mass
- 1.128 × Sun
- Age
- 7.4 billion years
System
- Distance from Earth
- 1,118 light-years (342.8 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2019
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.