K2-19 is 945 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this G9 star; the first was found in 2015 by transit (K2).
Fly there in 3DK2-19 d goes round its star every 2.51 days, 35 times as often as Mercury goes round the Sun.
| Spectral type | G9 |
| Surface temperature | 5,322 K |
| Mass | 0.88 solar masses |
| Radius | 0.82 solar radii |
| Luminosity | 0.5106 times the Sun |
| Apparent magnitude | 13.024 |
| Age | about 1.7 billion years |
| Distance from the Sun | 945.3 light-years (289.8 parsecs) |
| Position (J2000) | RA 174.9603°, Dec 0.6036° |
| Constellation | Virgo |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| K2-19 d | 2.51 days | 0.0348 AU | 1.044 R⊕ | 6.2 M⊕ | Transit, 2016 |
| K2-19 b | 7.92 days | 0.0749 AU | 7 R⊕ | 30.8 M⊕ | Transit, 2015 |
| K2-19 c | 11.9 days | 0.0982 AU | 4.1 R⊕ | 11 M⊕ | Transit, 2015 |
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 5,322 K, 0.51 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.70 to 1.25 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 945 years ago, around 1080.