Kepler-255 is 3,433 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 5,573 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-255 d goes round its star every 25.1 hours, 84 times as often as Mercury goes round the Sun.
| Surface temperature | 5,573 K |
| Mass | 0.867 solar masses |
| Radius | 0.933 solar radii |
| Luminosity | 0.656 times the Sun |
| Apparent magnitude | 15.699 |
| Age | about 2.4 billion years |
| Distance from the Sun | 3432.9 light-years (1052.5 parsecs) |
| Position (J2000) | RA 296.0643°, Dec 45.9768° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-255 d | 25.1 hours | 0.0192 AU | 1.32 R⊕ | 2.3 M⊕ estimated | Transit, 2016 |
| Kepler-255 b | 5.71 days | 0.0630 AU | 1.55 R⊕ | 3.02 M⊕ estimated | Transit, 2014 |
| Kepler-255 c | 9.95 days | 0.0920 AU | 2.99 R⊕ | 9.22 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.