Kepler-247 is 2,165 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this K star; the first was found in 2014 by transit timing variations (Kepler).
Fly there in 3DKepler-247 b goes round its star every 3.34 days, 26 times as often as Mercury goes round the Sun.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Spectral type | K |
| Surface temperature | 5,100 K |
| Mass | 0.887 solar masses |
| Radius | 0.768 solar radii |
| Luminosity | 0.3787 times the Sun |
| Apparent magnitude | 15.199 |
| Age | about 2.14 billion years |
| Distance from the Sun | 2164.7 light-years (663.7 parsecs) |
| Position (J2000) | RA 288.6426°, Dec 43.0394° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| KOI-884 e | 31.1 days | 0.186 AU from Kepler’s law | 9.54 R⊕ estimated | 66.054 M⊕ | Transit Timing Variations, 2014 |
| Kepler-247 b | 3.34 days | 0.0420 AU | 1.64 R⊕ | 3.33 M⊕ estimated | Transit, 2014 |
| Kepler-247 c | 9.44 days | 0.0840 AU | 4.09 R⊕ | 15.7 M⊕ estimated | Transit, 2014 |
| Kepler-247 d | 20.5 days | 0.141 AU | 4.5 R⊕ | 50 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.