Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Carina |
Right ascension | 10h 17m 04.9753s [1] |
Declination | −61° 19′ 56.288″ [1] |
Apparent magnitude (V) | 3.36 to 3.44 [2] |
Characteristics | |
Spectral type | K2.5II [3] |
U−B color index | +1.72 [4] |
B−V color index | +1.54 [4] |
R−I color index | +0.77 [4] |
Variable type | LC [2] |
Astrometry | |
Radial velocity (Rv) | 8.2±0.9 [5] km/s |
Proper motion (μ) |
RA: −23.922
[1]
mas/
yr Dec.: 6.734 [1] mas/ yr |
Parallax (π) | 4.3046 ± 0.1345 mas [6] |
Distance | 760 ± 20
ly (232 ± 7 pc) |
Details | |
Mass | 9.0 [7] M☉ |
Radius | 128 [7] R☉ |
Luminosity | 3,236 [7] L☉ |
Surface gravity (log g) | 1.17 - 1.36 [7] cgs |
Temperature | 4,118 [7] K |
Metallicity [Fe/H] | 0.54 [7] dex |
Age | 45.5 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
V337 Carinae (V337 Car, q Carinae) is a K-type bright giant star in the constellation of Carina. It is an irregular variable and has an apparent visual magnitude which varies between 3.36 and 3.44.
V337 has a spectral class of K2.5II, indicating a bright giant. It is considered likely to be on the red giant branch of stars fusing hydrogen around an inert helium core. [7] However, with a mass nine times that of the Sun, it is also an accepted supernova candidate. [11] Its limb-darkened angular diameter has been measured using interferometry at 2.4 mas. [12]
V337 Carinae has two companions listed in multiple star catalogues. Both are 13th-magnitude stars, component B 16.9 ″ and component C 25.9″ away. [13] Component B is a distant background star, [14] while component C is at about the same distance as V337 Carinae. [15]
Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
---|---|
Constellation | Carina |
Right ascension | 10h 17m 04.9753s [1] |
Declination | −61° 19′ 56.288″ [1] |
Apparent magnitude (V) | 3.36 to 3.44 [2] |
Characteristics | |
Spectral type | K2.5II [3] |
U−B color index | +1.72 [4] |
B−V color index | +1.54 [4] |
R−I color index | +0.77 [4] |
Variable type | LC [2] |
Astrometry | |
Radial velocity (Rv) | 8.2±0.9 [5] km/s |
Proper motion (μ) |
RA: −23.922
[1]
mas/
yr Dec.: 6.734 [1] mas/ yr |
Parallax (π) | 4.3046 ± 0.1345 mas [6] |
Distance | 760 ± 20
ly (232 ± 7 pc) |
Details | |
Mass | 9.0 [7] M☉ |
Radius | 128 [7] R☉ |
Luminosity | 3,236 [7] L☉ |
Surface gravity (log g) | 1.17 - 1.36 [7] cgs |
Temperature | 4,118 [7] K |
Metallicity [Fe/H] | 0.54 [7] dex |
Age | 45.5 [8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
V337 Carinae (V337 Car, q Carinae) is a K-type bright giant star in the constellation of Carina. It is an irregular variable and has an apparent visual magnitude which varies between 3.36 and 3.44.
V337 has a spectral class of K2.5II, indicating a bright giant. It is considered likely to be on the red giant branch of stars fusing hydrogen around an inert helium core. [7] However, with a mass nine times that of the Sun, it is also an accepted supernova candidate. [11] Its limb-darkened angular diameter has been measured using interferometry at 2.4 mas. [12]
V337 Carinae has two companions listed in multiple star catalogues. Both are 13th-magnitude stars, component B 16.9 ″ and component C 25.9″ away. [13] Component B is a distant background star, [14] while component C is at about the same distance as V337 Carinae. [15]