K2-50 is 840 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 4,326 K star; the first was found in 2016 by transit (K2).
Fly there in 3DEPIC 201833600 c goes round its star every 3.96 days, 22 times as often as Mercury goes round the Sun.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Surface temperature | 4,326 K |
| Mass | 0.611 solar masses |
| Radius | 0.546 solar radii |
| Luminosity | 0.1338 times the Sun |
| Apparent magnitude | 14.705 |
| Distance from the Sun | 839.7 light-years (257.4 parsecs) |
| Position (J2000) | RA 169.4837°, Dec 5.9883° |
| Constellation | Leo |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| EPIC 201833600 c | 3.96 days | 0.0416 AU from Kepler’s law | 1 R⊕ | 0.972 M⊕ estimated | Transit, 2019 |
| K2-50 b | 8.75 days | 0.0705 AU | 1.59 R⊕ | 3.15 M⊕ estimated | Transit, 2016 |
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 4,326 K, 0.13 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.37 to 0.69 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 840 years ago, around 1190.