Kepler-78 is 406 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G star; the first was found in 2013 by transit (Kepler).
Fly there in 3DKepler-78 b goes round its star every 8.5 hours, 248 times as often as Mercury goes round the Sun.
Kepler-78 is one of 2 stars in its system. The position of the other star is not catalogued, so only Kepler-78 and its planets are drawn.
| Spectral type | G |
| Surface temperature | 5,058 K |
| Mass | 0.779 solar masses |
| Radius | 0.7475 solar radii |
| Luminosity | 0.3178 times the Sun |
| Apparent magnitude | 11.717 |
| Age | about 0.625 billion years |
| Distance from the Sun | 405.7 light-years (124.4 parsecs) |
| Position (J2000) | RA 293.7420°, Dec 44.4483° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-78 b | 8.5 hours | 0.0090 AU | 1.201 R⊕ | 1.68 M⊕ | Transit, 2013 |
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.