Kepler-8 is 3,333 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 6,213 K star; the first was found in 2010 by transit (Kepler).
Fly there in 3DKepler-8 b goes round its star every 3.52 days, 25 times as often as Mercury goes round the Sun.
| Surface temperature | 6,213 K |
| Mass | 1.213 solar masses |
| Radius | 1.486 solar radii |
| Luminosity | 4.027 times the Sun |
| Apparent magnitude | 13.598 |
| Age | about 3.47 billion years |
| Distance from the Sun | 3332.9 light-years (1021.9 parsecs) |
| Position (J2000) | RA 281.2881°, Dec 42.4511° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-8 b | 3.52 days | 0.0474 AU | 15.872 R⊕ | 187.52 M⊕ | Transit, 2010 |
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 6,213 K, 4.0 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.86 to 3.24 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 3,333 years ago, around 1300 BC.