La Superba
Variable star in the constellation Canes Venatici / From Wikipedia, the free encyclopedia
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For the Italian city with that nickname, see Genoa.
La Superba (Y CVn, Y Canum Venaticorum) is a strikingly red giant star in the constellation Canes Venatici. It is a carbon star and semiregular variable.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Canes Venatici |
Right ascension | 12h 45m 07.826s[1] |
Declination | +45° 26′ 24.93″[1] |
Apparent magnitude (V) | +4.86 to +7.32[2] |
Characteristics | |
Evolutionary stage | Asymptotic giant branch |
Spectral type | C54J(N3)[3] |
U−B color index | 6.62[4] |
B−V color index | 2.54[4] |
V−R color index | 1.75[5] |
R−I color index | 1.38[5] |
Variable type | SRb[3] |
Astrometry | |
Radial velocity (Rv) | 15.30[6] km/s |
Proper motion (μ) | RA: −2.968[1] mas/yr Dec.: 13.063[1] mas/yr |
Parallax (π) | 3.2222 ± 0.1744 mas[1] |
Distance | 1,010 ± 50 ly (310 ± 20 pc) |
Absolute magnitude (MV) | −1.203[7] |
Details | |
Mass | 1.2[8] M☉ |
Radius | 287[9] R☉ |
Luminosity | 4,400[9] – 9,400[10] L☉ |
Surface gravity (log g) | +0.23[8] cgs |
Temperature | 2,600 - 3,200[11] K |
Metallicity [Fe/H] | −0.21[8] dex |
Other designations | |
Database references | |
SIMBAD | data |
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