K2-148 is 406 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 4,079 K star; the first was found in 2018 by transit (K2).
Fly there in 3DK2-148 b goes round its star every 4.38 days, 20 times as often as Mercury goes round the Sun.
K2-148 is one of 2 stars in its system. The position of the other star is not catalogued, so only K2-148 and its planets are drawn.
| Surface temperature | 4,079 K |
| Mass | 0.65 solar masses |
| Radius | 0.632 solar radii |
| Luminosity | 0.101 times the Sun |
| Apparent magnitude | 13.627 |
| Distance from the Sun | 405.9 light-years (124.5 parsecs) |
| Position (J2000) | RA 14.5176°, Dec -0.1933° |
| Constellation | Cetus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-148 b | 4.38 days | 0.0454 AU | 1.33 R⊕ | 2.33 M⊕ estimated | Transit, 2018 |
| K2-148 c | 6.92 days | 0.0616 AU | 1.73 R⊕ | 3.64 M⊕ estimated | Transit, 2018 |
| K2-148 d | 9.76 days | 0.0774 AU | 1.64 R⊕ | 3.33 M⊕ estimated | Transit, 2018 |
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.
For a star of 4,079 K, 0.10 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.33 to 0.62 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 406 years ago, around 1620.