AG Carinae
Luminous variable star in the constellation Carina / From Wikipedia, the free encyclopedia
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AG Carinae (AG Car) is a star in the constellation Carina. It is classified as a luminous blue variable (LBV) and is one of the most luminous stars in the Milky Way. The great distance (20,000 light-years) and intervening dust mean that the star is not usually visible to the naked eye; its apparent brightness varies erratically between magnitude 5.7 and 9.0.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Carina |
Right ascension | 10h 56m 11.57814s[1] |
Declination | −60° 27′ 12.8107″[1] |
Apparent magnitude (V) | 6.96[2] (5.7–9.0)[3] |
Characteristics | |
Spectral type | LBV[4] |
U−B color index | −0.58[2] |
B−V color index | +0.61[2] |
Variable type | LBV[5] |
Astrometry | |
Proper motion (μ) | RA: −4.808[1] mas/yr Dec.: +1.955[1] mas/yr |
Parallax (π) | 0.1925 ± 0.0165 mas[1] |
Distance | 17,000 ± 1,000 ly (5,200 ± 400 pc) |
Absolute magnitude (MV) | ~−8 (at minimum)[4] |
Details | |
Mass | 55[6] M☉ |
Radius | 50[7]–552[8] R☉ |
Luminosity | 600,000–900,000[9][lower-alpha 1] L☉ |
Temperature | 8,000–26,000[7] K |
Rotation | 13±2[10] days |
Rotational velocity (v sin i) | 220±50[10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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