GJ 163 is 49.3 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this M star; the first was found in 2013 by radial velocity (La Silla Observatory).
Fly there in 3DGJ 163 b goes round its star every 8.63 days, 10 times as often as Mercury goes round the Sun.
| Spectral type | M |
| Surface temperature | 3,500 K |
| Mass | 0.4 solar masses |
| Radius | 0.409738 solar radii |
| Luminosity | 0.01959 times the Sun |
| Apparent magnitude | 11.79 |
| Age | about 6 billion years |
| Distance from the Sun | 49.3 light-years (15.1 parsecs) |
| Position (J2000) | RA 62.3228°, Dec -53.3712° |
| Constellation | Dorado |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| GJ 163 b | 8.63 days | 0.0607 AU | 3.25 R⊕ estimated | 10.6 M⊕ minimum | Radial Velocity, 2013 |
| GJ 163 c | 25.6 days | 0.125 AU | 2.5 R⊕ estimated | 6.8 M⊕ minimum | Radial Velocity, 2013 |
| GJ 163 d | 604.0 days | 1.030 AU | 5.92 R⊕ estimated | 29.4 M⊕ minimum | Radial Velocity, 2013 |
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 3,500 K, 0.020 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.15 to 0.28 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 49 years ago, within living memory.