Kepler-252 is 1,238 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M0 V star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-252 b goes round its star every 6.67 days, 13 times as often as Mercury goes round the Sun.
| Spectral type | M0 V |
| Surface temperature | 4,208 K |
| Mass | 0.61 solar masses |
| Radius | 0.549 solar radii |
| Luminosity | 0.1638 times the Sun |
| Apparent magnitude | 15.406 |
| Age | about 13.9 billion years |
| Distance from the Sun | 1237.5 light-years (379.4 parsecs) |
| Position (J2000) | RA 295.5793°, Dec 44.5459° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-252 b | 6.67 days | 0.0580 AU | 1.23 R⊕ | 2.04 M⊕ estimated | Transit, 2014 |
| Kepler-252 c | 10.8 days | 0.0800 AU | 2.15 R⊕ | 5.27 M⊕ estimated | 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 4,208 K, 0.16 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.41 to 0.78 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 1,238 years ago, around AD 790.