Kepler-186 is 579 light-years from the Sun. The NASA Exoplanet Archive lists 5 planets around this M1 star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-186 b goes round its star every 3.89 days, 23 times as often as Mercury goes round the Sun.
| Spectral type | M1 |
| Surface temperature | 3,788 K |
| Mass | 0.478 solar masses |
| Radius | 0.472 solar radii |
| Luminosity | 0.04121 times the Sun |
| Apparent magnitude | 15.138 |
| Age | about 4 billion years |
| Distance from the Sun | 579.2 light-years (177.6 parsecs) |
| Position (J2000) | RA 298.6527°, Dec 43.9550° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-186 b | 3.89 days | 0.0343 AU | 1.07 R⊕ | 1.24 M⊕ estimated | Transit, 2014 |
| Kepler-186 c | 7.27 days | 0.0451 AU | 1.25 R⊕ | 2.1 M⊕ estimated | Transit, 2014 |
| Kepler-186 d | 13.3 days | 0.0781 AU | 1.4 R⊕ | 2.54 M⊕ estimated | Transit, 2014 |
| Kepler-186 e | 22.4 days | 0.110 AU | 1.27 R⊕ | 2.15 M⊕ estimated | Transit, 2014 |
| Kepler-186 f disputed | 129.9 days | 0.432 AU | 1.17 R⊕ | 1.71 M⊕ estimated | Transit, 2014 |
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.