TOI-406 c

A confirmed exoplanet orbiting TOI-406.

Compared with Earth

Size
About 1.3 times Earth's width.
Mass
About 2.1 times Earth's mass.
Temperature
About 311 °C (592 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
Starlight
About 19 times the starlight Earth gets from the Sun.
Year
A year here lasts about 3.3 Earth days.

Planet

Radius
1.32 × Earth
Mass
2.08 × Earth
Density
4.9 g/cm³
Equilibrium temperature
584 K
Starlight received
19 × Earth
Orbital period
3.307 days
Average distance from its star
0.0322 AU

Star

Host star
TOI-406
Spectral class
M — red dwarf
Surface temperature
3,392 K
Radius
0.41 × Sun
Mass
0.408 × Sun
Age
Unknown

System

Distance from Earth
101.3 light-years (31.06 parsecs)
Stars in system
1
Known planets
2

Discovery

Year
2024
Method
Transit
Facility
Transiting Exoplanet Survey Satellite (TESS)

Data from the NASA Exoplanet Archive, synced October 14, 2026.