Kepler-99 is 680 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 4,782 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-99 b goes round its star every 4.60 days, 19 times as often as Mercury goes round the Sun.
Kepler-99 is one of 2 stars in its system. The position of the other star is not catalogued, so only Kepler-99 and its planets are drawn.
| Surface temperature | 4,782 K |
| Mass | 0.79 solar masses |
| Radius | 0.73 solar radii |
| Luminosity | 0.2597 times the Sun |
| Apparent magnitude | 13.206 |
| Age | about 1.47 billion years |
| Distance from the Sun | 679.6 light-years (208.4 parsecs) |
| Position (J2000) | RA 297.3540°, Dec 41.3000° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-99 b | 4.60 days | 0.0507 AU | 1.48 R⊕ | 6.15 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 4,782 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 0.93 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 680 years ago, around 1350.