K2-237 is 1,027 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F9 V star; the first was found in 2018 by transit (K2).
Fly there in 3DK2-237 b goes round its star every 2.18 days, 40 times as often as Mercury goes round the Sun.
| Spectral type | F9 V |
| Surface temperature | 6,180 K |
| Mass | 1.256 solar masses |
| Radius | 1.236 solar radii |
| Luminosity | 2.01 times the Sun |
| Apparent magnitude | 11.602 |
| Age | about 1.09 billion years |
| Distance from the Sun | 1027.4 light-years (315.0 parsecs) |
| Position (J2000) | RA 253.7688°, Dec -28.7106° |
| Constellation | Ophiuchus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-237 b | 2.18 days | 0.0355 AU | 16.062 R⊕ | 434.15 M⊕ | Transit, 2018 |
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 6,180 K, 2.0 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.32 to 2.30 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 1,027 years ago, around 1000.