Kepler-102 is 352 light-years from the Sun. The NASA Exoplanet Archive lists 5 planets around this 4,909 K star; the first was found in 2013 by transit (Kepler).
Fly there in 3DKepler-102 b goes round its star every 5.29 days, 17 times as often as Mercury goes round the Sun.
| Surface temperature | 4,909 K |
| Mass | 0.803 solar masses |
| Radius | 0.724 solar radii |
| Luminosity | 0.2604 times the Sun |
| Apparent magnitude | 12.072 |
| Age | about 1.1 billion years |
| Distance from the Sun | 351.6 light-years (107.8 parsecs) |
| Position (J2000) | RA 281.4825°, Dec 47.2078° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-102 b | 5.29 days | 0.0552 AU | 0.46 R⊕ | 1.1 M⊕ | Transit, 2014 |
| Kepler-102 c | 7.07 days | 0.0670 AU | 0.567 R⊕ | 1.7 M⊕ | Transit, 2014 |
| Kepler-102 d | 10.3 days | 0.0862 AU | 1.154 R⊕ | 3 M⊕ | Transit, 2014 |
| Kepler-102 e | 16.1 days | 0.116 AU | 2.17 R⊕ | 4.7 M⊕ | Transit, 2013 |
| Kepler-102 f | 27.5 days | 0.166 AU | 0.861 R⊕ | 4.3 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.
For a star of 4,909 K, 0.26 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.51 to 0.92 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 352 years ago, around 1670.