TOI-540 b
A confirmed exoplanet orbiting TOI-540.
Compared with Earth
- Size
- About 90% of Earth's width.
- Temperature
- About 338 °C (640 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Starlight
- About 23 times the starlight Earth gets from the Sun.
- Year
- A year here lasts about 1.2 Earth days.
Planet
- Radius
- 0.903 × Earth
- Mass
- Unknown
- Density
- Unknown
- Equilibrium temperature
- 611 K
- Starlight received
- 23.4 × Earth
- Orbital period
- 1.239 days
- Average distance from its star
- 0.01223 AU
Star
- Host star
- TOI-540
- Spectral class
- M — red dwarf
- Surface temperature
- 3,216 K
- Radius
- 0.1895 × Sun
- Mass
- 0.159 × Sun
- Age
- 1.1 billion years
System
- Distance from Earth
- 45.67 light-years (14 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2020
- Method
- Transit
- Facility
- Transiting Exoplanet Survey Satellite (TESS)
Data from the NASA Exoplanet Archive, synced October 14, 2026.