K2-266 is 253 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this 4,285 K star; the first was found in 2018 by transit (K2).
Fly there in 3DK2-266 b goes round its star every 15.8 hours, 134 times as often as Mercury goes round the Sun.
K2-266 is one of 2 stars in its system: the other is drawn where the Washington Double Star Catalog measures it on the sky.
| Surface temperature | 4,285 K |
| Mass | 0.686 solar masses |
| Radius | 0.703 solar radii |
| Luminosity | 0.1502 times the Sun |
| Apparent magnitude | 11.625 |
| Distance from the Sun | 253.0 light-years (77.6 parsecs) |
| Position (J2000) | RA 157.9357°, Dec 0.9373° |
| Constellation | Sextans |
K2-266 B has no spectral type listed of magnitude 13.54, judged a true companion. In 2015 it was 42.7″ from K2-266, at position angle 256° (Washington Double Star Catalog, 10317+0056 GWP1393): 3,312 AU on the sky at this distance. The true distance can only be larger. Its colour is estimated from its brightness.
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-266 b | 15.8 hours | 0.0131 AU | 3.3 R⊕ | 11.268 M⊕ estimated | Transit, 2018 |
| K2-266 c | 7.81 days | 0.0679 AU | 0.705 R⊕ | 0.29013 M⊕ estimated | Transit, 2018 |
| K2-266 d | 14.7 days | 0.103 AU | 2.93 R⊕ | 8.9 M⊕ | Transit, 2018 |
| K2-266 e | 19.5 days | 0.125 AU | 2.73 R⊕ | 14.3 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 4,285 K, 0.15 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.40 to 0.74 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 253 years ago, around 1770.