Kepler-388 is 1,386 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 4,498 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-388 b goes round its star every 3.17 days, 28 times as often as Mercury goes round the Sun.
| Surface temperature | 4,498 K |
| Mass | 0.635 solar masses |
| Radius | 0.586 solar radii |
| Luminosity | 0.3636 times the Sun |
| Apparent magnitude | 15.218 |
| Age | about 13.9 billion years |
| Distance from the Sun | 1386.2 light-years (425.0 parsecs) |
| Position (J2000) | RA 284.8281°, Dec 44.6086° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-388 b | 3.17 days | 0.0360 AU | 0.81 R⊕ | 0.457 M⊕ estimated | Transit, 2014 |
| Kepler-388 c | 13.3 days | 0.0930 AU | 0.86 R⊕ | 0.566 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.