K2-157 is 973 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this G9 V star; the first was found in 2018 by transit (K2).
Fly there in 3DK2-157 b goes round its star every 8.8 hours, 241 times as often as Mercury goes round the Sun.
| Spectral type | G9 V |
| Surface temperature | 5,334 K |
| Mass | 0.89 solar masses |
| Radius | 0.86 solar radii |
| Luminosity | 0.6163 times the Sun |
| Apparent magnitude | 12.942 |
| Age | about 8.8 billion years |
| Distance from the Sun | 973.2 light-years (298.4 parsecs) |
| Position (J2000) | RA 183.7515°, Dec -5.7820° |
| Constellation | Virgo |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-157 b | 8.8 hours | 0.0096 AU | 0.935 R⊕ | 1.14 M⊕ | Transit, 2018 |
| K2-157 c | 25.9 days | 0.165 AU | 6.08 R⊕ estimated | 30.8 M⊕ minimum | Radial Velocity, 2025 |
| K2-157 d | 66.5 days | 0.309 AU | 5.16 R⊕ estimated | 23.3 M⊕ minimum | Radial Velocity, 2025 |
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.