Kepler-339 is 2,011 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 5,631 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-339 b goes round its star every 4.98 days, 18 times as often as Mercury goes round the Sun.
| Surface temperature | 5,631 K |
| Mass | 0.87 solar masses |
| Radius | 0.802 solar radii |
| Luminosity | 0.4862 times the Sun |
| Apparent magnitude | 14.706 |
| Age | about 0.98 billion years |
| Distance from the Sun | 2011.2 light-years (616.6 parsecs) |
| Position (J2000) | RA 293.3517°, Dec 48.4446° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-339 b | 4.98 days | 0.0550 AU | 1.42 R⊕ | 2.6 M⊕ estimated | Transit, 2014 |
| Kepler-339 c | 6.99 days | 0.0690 AU | 1.15 R⊕ | 7.3 M⊕ | Transit, 2014 |
| Kepler-339 d | 10.6 days | 0.0910 AU | 1.17 R⊕ | 14.7 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.