Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Ara |
Right ascension | 17h 30m 11.20s[1] |
Declination | –51° 38′ 13.1″[1] |
Apparent magnitude (V) | 9.59 |
Characteristics | |
Spectral type | M0V[2]/M3V |
Apparent magnitude (B) | 11.05/14.8 |
Apparent magnitude (J) | 6.711 |
Apparent magnitude (H) | 6.082 |
Apparent magnitude (K) | 5.825 |
B−V color index | 1.46 |
Astrometry | |
Radial velocity (Rv) | −39.82±0.14[3] km/s |
Proper motion (μ) | RA: −258.759±0.034[3] mas/yr Dec.: −185.119±0.025[3] mas/yr |
Parallax (π) | 62.5786 ± 0.0303 mas[3] |
Distance | 52.12 ± 0.03 ly (15.980 ± 0.008 pc) |
Absolute magnitude (MV) | 8.55 |
Details | |
Mass | 0.631±0.017[4]/0.29[5] M☉ |
Radius | 0.617+0.028 −0.027[4] R☉ |
Luminosity | 0.08892±0.00220[4] L☉ |
Temperature | 4,014+94 −90[4] K |
Metallicity [Fe/H] | 0.23±0.10[5] dex |
Rotation | 41.2±3.8 d[2] |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
Gliese 676 is a 10th-magnitude wide binary system of red dwarfs that has an estimated minimum separation of 800 AU with an orbital period of greater than 20,000 years.[6] It is located approximately 54 light years away in the constellation Ara. In 2009, a gas giant was found in orbit around the primary star, in addition to its confirmation in 2011 there was also a strong indication of a companion; the second gas giant was characterised in 2012, along with two much smaller planets.
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