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24 Capricorni
Star in the southern constellation of Capricornus. / From Wikipedia, the free encyclopedia
24 Capricorni or A Capricorni is a single[8] star in the southern constellation of Capricornus. This object is visible to the naked eye as a faint, red-hued star with an apparent visual magnitude of +4.49.[2] It is approximately 460 light years from the Sun, based on parallax.[1] The star is moving further from the Earth with a heliocentric radial velocity of +32 km/s.[2]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Capricornus |
Right ascension | 21h 07m 07.66733s[1] |
Declination | −25° 00′ 21.0790″[1] |
Apparent magnitude (V) | +4.49[2] |
Characteristics | |
Evolutionary stage | AGB[3] |
Spectral type | M1− III[4] |
B−V color index | 1.604±0.005[2] |
Astrometry | |
Radial velocity (Rv) | +32.1±0.8[2] km/s |
Proper motion (μ) | RA: −28.09[1] mas/yr Dec.: −44.14[1] mas/yr |
Parallax (π) | 7.15 ± 0.22 mas[1] |
Distance | 460 ± 10 ly (140 ± 4 pc) |
Absolute magnitude (MV) | −1.24[2] |
Details | |
Radius | 54.06+1.88 −2.72[5] R☉ |
Luminosity | 611±41[5] L☉ |
Temperature | 3,903+102 −66[5] K |
Other designations | |
Database references | |
SIMBAD | data |
Close
This is an aging red giant, currently on the asymptotic giant branch,[3] with a stellar classification of M1− III;[4] a star that has exhausted the supply of hydrogen at its core and expanded to 54[5] times the Sun's radius. It is radiating 611[5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,903 K.[5]