Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Capricornus |
Right ascension | 20h 11m 57.89778s[1] |
Declination | −12° 23′ 32.6484″[1] |
Apparent magnitude (V) | +6.34[2] |
Characteristics | |
Spectral type | K0 III[3] |
B−V color index | +1.21[2] |
Astrometry | |
Radial velocity (Rv) | +0.9[4] km/s |
Proper motion (μ) | RA: −8.004[1] mas/yr Dec.: −18.202[1] mas/yr |
Parallax (π) | 5.2607 ± 0.0577 mas[1] |
Distance | 620 ± 7 ly (190 ± 2 pc) |
Absolute magnitude (MV) | +0.56[5] |
Details | |
Mass | 1.55[6] M☉ |
Radius | 18.88+0.72 −0.95[1] R☉ |
Luminosity | 139±2[1] L☉ |
Temperature | 4,439±42[6] K |
Age | 3.35[6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Xi1 Capricorni, Latinized from ξ1 Capricorni, is an orange-hued star in the constellation Capricornus. With an apparent visual magnitude of +6.34,[2] it is near the lower limit of brightness for stars that can be seen with the naked eye. Based upon an annual parallax shift of 5.26 mas as seen from Earth,[1] this system is located roughly 620 light-years from the Sun.
It is an evolved K-type giant star with a stellar classification of K0 III.[3] With an age of 3.35 billion years, this star has an estimated 1.55[6] times the mass of the Sun and is radiating 139[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,439 K.[6]