Xi1 Capricorni

For other stars with this Bayer designation, see ξ Capricorni.
Xi1 Capricorni
Location of ξ1 Capricorni (circled)
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]
Distance620 ± 7 ly
(190 ± 2 pc)
Absolute magnitude (MV)+0.56[5]
Details
Mass1.55[6] M☉
Radius18.88+0.72
−0.95[1] R☉
Luminosity139±2[1] L☉
Temperature4,439±42[6] K
Age3.35[6] Gyr
Other designations
ξ1 Cap, 1 Cap, BD−12° 5664, GC 28026, HD 191753, HIP 99529, HR 7712, SAO 163328[7]
Database references
SIMBADdata

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]

  1. ^ a b c d e f g h i Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Corben1968 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).