K2-38 is 628 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G2 V star; the first was found in 2016 by transit (K2).
Fly there in 3DK2-38 b goes round its star every 4.02 days, 22 times as often as Mercury goes round the Sun.
| Spectral type | G2 V |
| Surface temperature | 5,731 K |
| Mass | 1.03 solar masses |
| Radius | 1.06 solar radii |
| Luminosity | 1.09 times the Sun |
| Apparent magnitude | 11.344 |
| Age | about 6.7 billion years |
| Distance from the Sun | 628.5 light-years (192.7 parsecs) |
| Position (J2000) | RA 240.0333°, Dec -23.1894° |
| Constellation | Scorpius |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-38 b | 4.02 days | 0.0499 AU | 1.54 R⊕ | 7.3 M⊕ | Transit, 2016 |
| K2-38 c | 10.6 days | 0.0951 AU | 2.29 R⊕ | 8.3 M⊕ | Transit, 2016 |
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 5,731 K, 1.1 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.00 to 1.76 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 628 years ago, around 1400.