Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Coma Berenices |
Right ascension | 12h 24m 18.52125s [1] |
Declination | +26° 05′ 55.0346″ [1] |
Apparent magnitude (V) | 5.17 [2] |
Characteristics | |
Spectral type | A3 V [3] [2] |
B−V color index | 0.082±0.003 [2] |
Astrometry | |
Radial velocity (Rv) | +0.1±0.1 [4] km/s |
Proper motion (μ) |
RA: −28.29
[1]
mas/
yr Dec.: +3.07 [1] mas/ yr |
Parallax (π) | 12.33 ± 1.11 mas [1] |
Distance | 260 ± 20
ly (81 ± 7 pc) |
Absolute magnitude (MV) | 0.38 [2] |
Details | |
Mass | 2.83 [5] M☉ |
Luminosity | 60.93 [2] L☉ |
Surface gravity (log g) | 3.84±0.14 [5] cgs |
Temperature | 8,846±301 [5] K |
Metallicity [Fe/H] | 0.24 [2] dex |
Rotational velocity (v sin i) | 48 [5] km/s |
Age | 429 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
13 Comae Berenices is a probable binary star [3] system in the northern constellation of Coma Berenices. It has an apparent visual magnitude of 5.17, [2] which is bright enough to be faintly visible to the naked eye. With an annual parallax shift of 12.33 mas, [1] it is located around 260 light years from the Sun. It is member of the nearby Coma Star Cluster (Melotte 111). [7]
Based on measured changes in the star's motion, this is most likely an astrometric binary system. [3] The visible component is an A-type main-sequence star with a stellar classification of A3 V. [3] It is catalogued as an Alpha2 Canum Venaticorum variable [8] with the designation GN Com. [9] Rensom (1990) listed it as a suspected Am star. [10] The system is a source of X-ray emission, which may be coming from the companion. [11]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Coma Berenices |
Right ascension | 12h 24m 18.52125s [1] |
Declination | +26° 05′ 55.0346″ [1] |
Apparent magnitude (V) | 5.17 [2] |
Characteristics | |
Spectral type | A3 V [3] [2] |
B−V color index | 0.082±0.003 [2] |
Astrometry | |
Radial velocity (Rv) | +0.1±0.1 [4] km/s |
Proper motion (μ) |
RA: −28.29
[1]
mas/
yr Dec.: +3.07 [1] mas/ yr |
Parallax (π) | 12.33 ± 1.11 mas [1] |
Distance | 260 ± 20
ly (81 ± 7 pc) |
Absolute magnitude (MV) | 0.38 [2] |
Details | |
Mass | 2.83 [5] M☉ |
Luminosity | 60.93 [2] L☉ |
Surface gravity (log g) | 3.84±0.14 [5] cgs |
Temperature | 8,846±301 [5] K |
Metallicity [Fe/H] | 0.24 [2] dex |
Rotational velocity (v sin i) | 48 [5] km/s |
Age | 429 [5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
13 Comae Berenices is a probable binary star [3] system in the northern constellation of Coma Berenices. It has an apparent visual magnitude of 5.17, [2] which is bright enough to be faintly visible to the naked eye. With an annual parallax shift of 12.33 mas, [1] it is located around 260 light years from the Sun. It is member of the nearby Coma Star Cluster (Melotte 111). [7]
Based on measured changes in the star's motion, this is most likely an astrometric binary system. [3] The visible component is an A-type main-sequence star with a stellar classification of A3 V. [3] It is catalogued as an Alpha2 Canum Venaticorum variable [8] with the designation GN Com. [9] Rensom (1990) listed it as a suspected Am star. [10] The system is a source of X-ray emission, which may be coming from the companion. [11]