GJ 180 is 38.9 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this M3 star; the first was found in 2014 by radial velocity (Multiple Observatories).
Fly there in 3DGJ 180 b goes round its star every 17.1 days, 5 times as often as Mercury goes round the Sun.
| Spectral type | M3 |
| Surface temperature | 3,371 K |
| Mass | 0.43 solar masses |
| Radius | 0.413049 solar radii |
| Luminosity | 0.013 times the Sun |
| Apparent magnitude | 10.914 |
| Distance from the Sun | 38.9 light-years (11.9 parsecs) |
| Position (J2000) | RA 73.4601°, Dec -17.7762° |
| Constellation | Eridanus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| GJ 180 b | 17.1 days | 0.0920 AU | 2.43 R⊕ estimated | 6.49 M⊕ minimum | Radial Velocity, 2014 |
| GJ 180 c | 24.3 days | 0.129 AU | 2.41 R⊕ estimated | 6.4 M⊕ minimum | Radial Velocity, 2014 |
| GJ 180 d | 106.3 days | 0.309 AU | 2.66 R⊕ estimated | 7.56 M⊕ minimum | Radial Velocity, 2020 |
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 3,371 K, 0.013 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.12 to 0.23 AU. 1 of its 3 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 39 years ago, within living memory.