Gliese 412
Gliese 412 Location of Gliese 412 in the constellation Ursa Major | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ursa Major |
| Gliese 412 A | |
| Right ascension | 11h 05m 28.57695s |
| Declination | +43° 31′ 36.3869″ |
| Apparent magnitude (V) | 8.68 |
| Gliese 412 B | |
| Right ascension | 11h 05m 30.88558s |
| Declination | +43° 31′ 17.8852″ |
| Apparent magnitude (V) | 14.45 |
| Characteristics | |
| Gliese 412 A | |
| Spectral type | M1.0V |
| U−B color index | +1.16 |
| B−V color index | +1.54 |
| Gliese 412 B | |
| Spectral type | M6.0V |
| B−V color index | +2.08 |
| Astrometry | |
| Gliese 412 A | |
| Radial velocity (Rv) | +68.41±0.12 km/s |
| Proper motion (μ) | RA: −4,406.469 mas/yr Dec.: +938.527 mas/yr |
| Parallax (π) | 203.8876±0.0332 mas |
| Distance | 15.997 ± 0.003 ly (4.9047 ± 0.0008 pc) |
| Absolute magnitude (MV) | 10.34 |
| Gliese 412 B | |
| Radial velocity (Rv) | +67.94±0.74 km/s |
| Proper motion (μ) | RA: −4,339.850 mas/yr Dec.: +960.696 mas/yr |
| Parallax (π) | 203.8323±0.0500 mas |
| Distance | 16.001 ± 0.004 ly (4.906 ± 0.001 pc) |
| Absolute magnitude (MV) | 16.05 |
| Details | |
| Gliese 412 A | |
| Mass | 0.387±0.010 M☉ |
| Radius | 0.398±0.009 R☉ |
| Luminosity | 0.0223±0.0004 L☉ |
| Surface gravity (log g) | 4.860±0.031 cgs |
| Temperature | 3,639±51 K |
| Metallicity [Fe/H] | −0.30±0.16 dex |
| Rotation | 36.9±2.5 d |
| Rotational velocity (v sin i) | <3 km/s |
| Age | 3 Gyr |
| Gliese 412 B | |
| Mass | 0.0952±0.0095 M☉ |
| Radius | 0.1262±0.0054 R☉ |
| Luminosity | 0.000915±0.000024 L☉ |
| Temperature | 2,863±60 K |
| Metallicity [Fe/H] | −0.32±0.08 dex |
| Rotational velocity (v sin i) | 7.7±1.7 km/s |
| Other designations | |
| BD+44°2051, GJ 412, CCDM J11055+4332AB, WDS J11055+4332AB
A: HIP 54211, SAO 43609, G 176-11, LAL 21258, LFT 757, LHS 38, LTT 12976, NLTT 26245, Gaia DR2 778947814402405120 B: WX UMa, G 176-12, LFT 758, LHS 39, LTT 12977, NLTT 26247, Gaia DR2 778947608243864320 | |
| Database references | |
| SIMBAD | A |
| B | |
Gliese 412 is a binary star system in the constellation Ursa Major. Among the nearest stars, they lie at a distance of 16.0 light-years (4.9 parsecs). The pair have an angular separation of 31.4″ at a position angle of 126.1°. Both components are relatively dim red dwarf stars.