K2-133 is 245 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this M1.5 V star; the first was found in 2017 by transit (K2).
Fly there in 3DK2-133 b goes round its star every 3.07 days, 29 times as often as Mercury goes round the Sun.
| Spectral type | M1.5 V |
| Surface temperature | 3,655 K |
| Mass | 0.461 solar masses |
| Radius | 0.455 solar radii |
| Luminosity | 0.0332 times the Sun |
| Apparent magnitude | 14.073 |
| Distance from the Sun | 245.2 light-years (75.2 parsecs) |
| Position (J2000) | RA 70.1494°, Dec 25.0098° |
| Constellation | Taurus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-133 b | 3.07 days | 0.0319 AU | 1.34 R⊕ | 2.36 M⊕ estimated | Transit, 2017 |
| K2-133 c | 4.87 days | 0.0434 AU | 1.603 R⊕ | 3.2 M⊕ estimated | Transit, 2017 |
| K2-133 d | 11.0 days | 0.0749 AU | 2.003 R⊕ | 4.67 M⊕ estimated | Transit, 2017 |
| K2-133 e | 26.6 days | 0.135 AU | 1.73 R⊕ | 3.64 M⊕ estimated | Transit, 2019 |
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.