GJ 3929
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Corona Borealis |
| Right ascension | 15h 58m 18.80s |
| Declination | +35° 24′ 24.3″ |
| Apparent magnitude (V) | 12.67 |
| Characteristics | |
| Spectral type | M3.5V |
| Astrometry | |
| Radial velocity (Rv) | 10.14 km/s |
| Proper motion (μ) | RA: −143.059 mas/yr Dec.: +318.120 mas/yr |
| Parallax (π) | 63.1727±0.038 mas |
| Distance | 51.63 ± 0.03 ly (15.830 ± 0.010 pc) |
| Absolute magnitude (MV) | 11.7 |
| Details | |
| Mass | 0.313+0.027 −0.022 M☉ |
| Radius | 0.32±0.01 R☉ |
| Luminosity | 0.0109+0.0005 −0.0004 L☉ |
| Surface gravity (log g) | 4.89±0.05 cgs |
| Temperature | 3,384±88 K |
| Metallicity [Fe/H] | −0.02±0.12 dex |
| Rotation | 122±13 d |
| Rotational velocity (v sin i) | <2 km/s |
| Age | 2.2 – 11.2 Gyr |
| Other designations | |
| TOI-2013, TIC 188589164, 2MASS J15581883+3524236, Gaia DR3 1372215976327300480, G 180-18 | |
| Database references | |
| SIMBAD | data |
GJ 3929, also known as Gliese 3929 and TOI-2013, is a red dwarf star located 51.6 light-years from Earth, in the constellation Corona Borealis. With an apparent magnitude of 12, it is not visible to the naked eye. In 2022, two exoplanets were detected orbiting the star.