Gl 378 is 48.8 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M1 star; the first was found in 2019 by radial velocity (Haute-Provence Observatory).
Fly there in 3DGl 378 b goes round its star every 3.82 days, 23 times as often as Mercury goes round the Sun.
| Spectral type | M1 |
| Surface temperature | 3,879 K |
| Mass | 0.56 solar masses |
| Radius | 0.56 solar radii |
| Luminosity | 0.06 times the Sun |
| Apparent magnitude | 10.03 |
| Distance from the Sun | 48.8 light-years (15.0 parsecs) |
| Position (J2000) | RA 150.5866°, Dec 48.0825° |
| Constellation | Ursa Major |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Gl 378 b | 3.82 days | 0.0394 AU | 3.66 R⊕ estimated | 13.02 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.