LSPM J2116+0234 is 57.5 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M3.0 V star; the first was found in 2019 by radial velocity (Calar Alto Observatory).
Fly there in 3DLSPM J2116+0234 b goes round its star every 14.4 days, 6 times as often as Mercury goes round the Sun.
| Spectral type | M3.0 V |
| Surface temperature | 3,475 K |
| Mass | 0.43 solar masses |
| Radius | 0.431 solar radii |
| Luminosity | 0.02 times the Sun |
| Apparent magnitude | 11.961 |
| Age | about 2 billion years |
| Distance from the Sun | 57.5 light-years (17.6 parsecs) |
| Position (J2000) | RA 319.1148°, Dec 2.5808° |
| Constellation | Equuleus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| LSPM J2116+0234 b | 14.4 days | 0.0876 AU | 3.71 R⊕ estimated | 13.3 M⊕ minimum | Radial Velocity, 2019 |
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 3,475 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 0.29 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 58 years ago, within living memory.