Kepler-57 is 2,101 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,188 K star; the first was found in 2012 by transit (Kepler).
Fly there in 3DKepler-57 b goes round its star every 5.72 days, 15 times as often as Mercury goes round the Sun.
| Surface temperature | 5,188 K |
| Mass | 0.859 solar masses |
| Radius | 0.826 solar radii |
| Luminosity | 0.4546 times the Sun |
| Apparent magnitude | 15.017 |
| Age | about 3.31 billion years |
| Distance from the Sun | 2100.9 light-years (644.1 parsecs) |
| Position (J2000) | RA 293.6413°, Dec 44.6571° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-57 b | 5.72 days | 0.0599 AU | 3.135 R⊕ | 25.06 M⊕ | Transit, 2012 |
| Kepler-57 c | 11.6 days | 0.0959 AU | 2.196 R⊕ | 6.86 M⊕ | Transit, 2012 |
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.