Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Camelopardalis |
Right ascension | 05h 03m 25.08963s [1] |
Declination | +60° 26′ 32.0895″ [1] |
Apparent magnitude (V) | 4.02 [2] |
Characteristics | |
Spectral type | G1Ib–IIa [3] |
U−B color index | +0.62 [2] |
B−V color index | +0.93 [2] |
R−I color index | +0.49 [2] |
Astrometry | |
Radial velocity (Rv) | −1.90 [4] km/s |
Proper motion (μ) |
RA: −6.50
[1]
mas/
yr Dec.: −14.15 [1] mas/ yr |
Parallax (π) | 3.74 ± 0.21 mas [1] |
Distance | 870 ± 50
ly (270 ± 20 pc) |
Absolute magnitude (MV) | −3.1 [5] |
Details | |
Mass | 6.5 [3] M☉ |
Radius | 58±13 [6] R☉ |
Luminosity | 1,592 [7] L☉ |
Surface gravity (log g) | 1.79 [3] cgs |
Temperature | 5,300 [3] K |
Metallicity [Fe/H] | −0.06 [8] dex |
Rotational velocity (v sin i) | 11.7 [9] km/s |
Age | 53 [3] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
Beta Camelopardalis, Latinised from β Camelopardalis, is the brightest star in the northern constellation of Camelopardalis. It is bright enough to be faintly visible to the naked eye, having an apparent visual magnitude of 4.02. [2] Based upon an annual parallax shift of 3.74 mas as seen from Earth, it is located roughly 870 light-years from the Sun. It is moving closer with a radial velocity of −1.90 km/s [4] and is most likely a single [10] star.
This is a yellow-hued G-type supergiant/ bright giant with a stellar classification of G1 Ib–IIa. [3] It is an estimated 60 million years old and is spinning with a projected rotational velocity of 11.7 km/s. [9] This is an unusually high rate of rotation for an evolved star of this type. One possible explanation is that it may have engulfed a nearby giant planet, such as a hot Jupiter. [11]
Beta Camelopardalis has 6.5 [3] times the mass of the Sun and has expanded to around 58 [6] the Sun's radius. The star is radiating 1,592 [7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,300 K. [3] It is a source of X-ray emission. [12]
β Cam has two visual [10] companions: a 7th-magnitude A5-class star at an angular separation of 84 arcseconds; and a 12th-magnitude star at 15 arcseconds. [13]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Camelopardalis |
Right ascension | 05h 03m 25.08963s [1] |
Declination | +60° 26′ 32.0895″ [1] |
Apparent magnitude (V) | 4.02 [2] |
Characteristics | |
Spectral type | G1Ib–IIa [3] |
U−B color index | +0.62 [2] |
B−V color index | +0.93 [2] |
R−I color index | +0.49 [2] |
Astrometry | |
Radial velocity (Rv) | −1.90 [4] km/s |
Proper motion (μ) |
RA: −6.50
[1]
mas/
yr Dec.: −14.15 [1] mas/ yr |
Parallax (π) | 3.74 ± 0.21 mas [1] |
Distance | 870 ± 50
ly (270 ± 20 pc) |
Absolute magnitude (MV) | −3.1 [5] |
Details | |
Mass | 6.5 [3] M☉ |
Radius | 58±13 [6] R☉ |
Luminosity | 1,592 [7] L☉ |
Surface gravity (log g) | 1.79 [3] cgs |
Temperature | 5,300 [3] K |
Metallicity [Fe/H] | −0.06 [8] dex |
Rotational velocity (v sin i) | 11.7 [9] km/s |
Age | 53 [3] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
Beta Camelopardalis, Latinised from β Camelopardalis, is the brightest star in the northern constellation of Camelopardalis. It is bright enough to be faintly visible to the naked eye, having an apparent visual magnitude of 4.02. [2] Based upon an annual parallax shift of 3.74 mas as seen from Earth, it is located roughly 870 light-years from the Sun. It is moving closer with a radial velocity of −1.90 km/s [4] and is most likely a single [10] star.
This is a yellow-hued G-type supergiant/ bright giant with a stellar classification of G1 Ib–IIa. [3] It is an estimated 60 million years old and is spinning with a projected rotational velocity of 11.7 km/s. [9] This is an unusually high rate of rotation for an evolved star of this type. One possible explanation is that it may have engulfed a nearby giant planet, such as a hot Jupiter. [11]
Beta Camelopardalis has 6.5 [3] times the mass of the Sun and has expanded to around 58 [6] the Sun's radius. The star is radiating 1,592 [7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,300 K. [3] It is a source of X-ray emission. [12]
β Cam has two visual [10] companions: a 7th-magnitude A5-class star at an angular separation of 84 arcseconds; and a 12th-magnitude star at 15 arcseconds. [13]