GJ 3929 is 51.6 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M3.5 V star; the first was found in 2022 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DGJ 3929 b goes round its star every 2.62 days, 34 times as often as Mercury goes round the Sun.
| Spectral type | M3.5 V |
| Surface temperature | 3,384 K |
| Mass | 0.313 solar masses |
| Radius | 0.32 solar radii |
| Luminosity | 0.0109 times the Sun |
| Apparent magnitude | 12.675 |
| Age | about 7.1 billion years |
| Distance from the Sun | 51.6 light-years (15.8 parsecs) |
| Position (J2000) | RA 239.5776°, Dec 35.4081° |
| Constellation | Corona Borealis |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| GJ 3929 b | 2.62 days | 0.0252 AU | 1.09 R⊕ | 1.75 M⊕ | Transit, 2022 |
| GJ 3929 c | 15.0 days | 0.0810 AU | 2.26 R⊕ estimated | 5.71 M⊕ minimum | Radial Velocity, 2022 |
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.