TOI-421 c
A confirmed exoplanet orbiting TOI-421.
Compared with Earth
- Size
- About 5.1 times Earth's width.
- Mass
- About 14 times Earth's mass.
- Temperature
- About 362 °C (683 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 16 Earth days.
Planet
- Radius
- 5.09 × Earth
- Mass
- 14.1 × Earth
- Density
- 0.59 g/cm³
- Equilibrium temperature
- 635 K
- Starlight received
- Unknown
- Orbital period
- 16.07 days
- Average distance from its star
- 0.117 AU
Star
- Host star
- TOI-421
- Spectral class
- K — orange dwarf
- Surface temperature
- 5,291 K
- Radius
- 0.866 × Sun
- Mass
- 0.833 × Sun
- Age
- 10.9 billion years
System
- Distance from Earth
- 244 light-years (74.8 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.