GJ 3323 is 17.5 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M4 star; the first was found in 2017 by radial velocity (La Silla Observatory).
Fly there in 3DGJ 3323 b goes round its star every 5.36 days, 16 times as often as Mercury goes round the Sun.
| Spectral type | M4 |
| Surface temperature | 3,159 K |
| Mass | 0.164 solar masses |
| Radius | 0.119 solar radii |
| Luminosity | 0.0027 times the Sun |
| Apparent magnitude | 12.57 |
| Distance from the Sun | 17.5 light-years (5.4 parsecs) |
| Position (J2000) | RA 75.4869°, Dec -6.9485° |
| Constellation | Eridanus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| GJ 3323 b | 5.36 days | 0.0328 AU | 1.23 R⊕ estimated | 2.02 M⊕ minimum | Radial Velocity, 2017 |
| GJ 3323 c | 40.5 days | 0.126 AU | 1.32 R⊕ estimated | 2.31 M⊕ minimum | Radial Velocity, 2017 |
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 3,159 K, 0.0027 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.054 to 0.11 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 18 years ago, within living memory.