GJ 3929
Artist's impression and size comparison of the two planets in the GJ 3929 system with Earth | |
| 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 | |
| Evolutionary stage | main sequence |
| 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±0.0208 mas |
| Distance | 51.63 ± 0.02 ly (15.830 ± 0.005 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 | 7.1+4.1 −4.9 Gyr |
| Other designations | |
| G 180-18, TOI-2013, TIC 188589164, 2MASS J15581883+3524236, Gaia DR3 1372215976327300480 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | 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.