Kepler-31 is 5,429 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 6,340 K star; the first was found in 2011 by transit (Kepler).
Fly there in 3DKepler-31 b goes round its star every 20.9 days, 4 times as often as Mercury goes round the Sun.
| Surface temperature | 6,340 K |
| Mass | 1.21 solar masses |
| Radius | 1.22 solar radii |
| Luminosity | 2.001 times the Sun |
| Apparent magnitude | 15.496 |
| Age | about 0.28 billion years |
| Distance from the Sun | 5429.3 light-years (1664.6 parsecs) |
| Position (J2000) | RA 294.0230°, Dec 45.8531° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-31 b | 20.9 days | 0.160 AU | 5.5 R⊕ | 36.742 M⊕ | Transit, 2011 |
| Kepler-31 c | 42.6 days | 0.260 AU | 5.3 R⊕ | 1493.7 M⊕ | Transit, 2011 |
| Kepler-31 d | 87.6 days | 0.400 AU | 3.9 R⊕ | 2161.2 M⊕ | 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.