Kepler-217 is 3,603 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 6,171 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-217 d goes round its star every 3.89 days, 23 times as often as Mercury goes round the Sun.
| Surface temperature | 6,171 K |
| Mass | 1.342 solar masses |
| Radius | 1.799 solar radii |
| Luminosity | 5.67 times the Sun |
| Apparent magnitude | 13.155 |
| Age | about 2.4 billion years |
| Distance from the Sun | 3602.9 light-years (1104.7 parsecs) |
| Position (J2000) | RA 293.0377°, Dec 46.2775° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-217 d | 3.89 days | 0.0534 AU | 1.32 R⊕ | 2.3 M⊕ estimated | Transit, 2016 |
| Kepler-217 b | 5.37 days | 0.0650 AU | 2.23 R⊕ | 5.6 M⊕ estimated | Transit, 2014 |
| Kepler-217 c | 8.59 days | 0.0890 AU | 1.85 R⊕ | 4.08 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.