Kepler-428 is 2,238 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K1 V star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-428 b goes round its star every 3.53 days, 25 times as often as Mercury goes round the Sun.
| Spectral type | K1 V |
| Surface temperature | 5,150 K |
| Mass | 0.87 solar masses |
| Radius | 0.8 solar radii |
| Luminosity | 0.4074 times the Sun |
| Apparent magnitude | 15.362 |
| Age | about 5 billion years |
| Distance from the Sun | 2238.4 light-years (686.3 parsecs) |
| Position (J2000) | RA 290.5817°, Dec 40.5773° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-428 b | 3.53 days | 0.0433 AU | 12.11 R⊕ | 403.63 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 5,150 K, 0.41 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.63 to 1.13 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 2,238 years ago, around 200 BC.