 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[note 1] |
| Right ascension | 15h 58m 18.8s[1] |
| Declination | +35° 24′ 24.3″[1] |
| Apparent magnitude (V) | 12.67[2] |
| Characteristics | |
| Spectral type | M3.5V[1] |
| Astrometry | |
| Radial velocity (Rv) | 10.14[2] km/s |
| Proper motion (μ) | RA: −143.277±0.066 mas/yr[2] Dec.: 318.219±0.082 mas/yr[2] |
| Parallax (π) | 63.1727 ± 0.038 mas[1] |
| Distance | 51.58±0.02 ly (15.822±0.006 pc)[3] |
| Absolute magnitude (MV) | 11 |
| Details[3] | |
| 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[4] |
| Rotational velocity (v sin i) | <2 km/s |
| Age | 2.2 – 11.2[note 2] Gyr |
| Other designations | |
| 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.[5][note 3] With an apparent magnitude of 12,[5] it is not visible to the naked eye. In 2022, two exoplanets were detected orbiting the star.[4]
- ^ a b c d e f "G 180-18". SIMBAD. Retrieved January 4, 2023.
- ^ a b c Cite error: The named reference
:6was invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
:2was invoked but never defined (see the help page). - ^ a b Kemmer, J.; Dreizler, S.; Kossakowski, D.; Stock, S.; Quirrenbach, A.; Caballero, J. A.; Amado, P. J.; Collins, K. A.; Espinoza, N.; Herrero, E.; Jenkins, J. M.; Latham, D. W.; Lillo-Box, J.; Narita, N.; Pallé, E. (2022-03-01). "Discovery and mass measurement of the hot, transiting, Earth-sized planet, GJ 3929 b". Astronomy & Astrophysics. 659: A17. arXiv:2202.00970. Bibcode:2022A&A...659A..17K. doi:10.1051/0004-6361/202142653. ISSN 0004-6361.
- ^ a b c "★ Gliese 3929". Stellar Catalog. Retrieved 2024-01-01.
Cite error: There are <ref group=note> tags on this page, but the references will not show without a {{reflist|group=note}} template (see the help page).