TOI-237 is 124 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M4.5 V star; the first was found in 2020 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-237 c goes round its star every 41.9 hours, 50 times as often as Mercury goes round the Sun.
| Spectral type | M4.5 V |
| Surface temperature | 3,212 K |
| Mass | 0.179 solar masses |
| Radius | 0.211 solar radii |
| Luminosity | 0.0041 times the Sun |
| Apparent magnitude | 16.37 |
| Age | about 4.5 billion years |
| Distance from the Sun | 124.2 light-years (38.1 parsecs) |
| Position (J2000) | RA 353.2435°, Dec -29.4165° |
| Constellation | Sculptor |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-237 c | 41.9 hours | 0.0160 AU | 1.206 R⊕ | 1.9 M⊕ estimated | Transit, 2026 |
| TOI-237 b | 5.44 days | 0.0341 AU | 1.44 R⊕ | 2.67 M⊕ estimated | Transit, 2020 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.
For a star of 3,212 K, 0.0041 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.067 to 0.13 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 124 years ago, around 1900.