Kepler-39 is 3,449 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F7 V star; the first was found in 2011 by transit (Kepler).
Fly there in 3DKepler-39 b goes round its star every 21.1 days, 4 times as often as Mercury goes round the Sun.
| Spectral type | F7 V |
| Surface temperature | 6,350 K |
| Mass | 1.29 solar masses |
| Radius | 1.4 solar radii |
| Luminosity | 2.218 times the Sun |
| Apparent magnitude | 14.355 |
| Age | about 2.1 billion years |
| Distance from the Sun | 3448.8 light-years (1057.4 parsecs) |
| Position (J2000) | RA 296.9603°, Dec 46.0343° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-39 b | 21.1 days | 0.164 AU | 13.9 R⊕ | 6388.1 M⊕ | Transit, 2011 |
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 6,350 K, 2.2 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.37 to 2.38 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 3,449 years ago, around 1400 BC.