41 Capricorni

41 Capricorni
Observation data
Epoch J2000      Equinox J2000
Constellation Capricornus
Right ascension 21h 28m 43.40070s[1]
Declination −21° 48′ 25.8504″[1]
Apparent magnitude (V) +5.24[2]
Characteristics
Spectral type K0 III[3]
B−V color index 0.991±0.002[4]
Astrometry
Radial velocity (Rv)−45.1±1.3[4] km/s
Proper motion (μ) RA: +134.83[1] mas/yr
Dec.: −5.73[1] mas/yr
Parallax (π)19.06 ± 0.29 mas[1]
Distance171 ± 3 ly
(52.5 ± 0.8 pc)
Absolute magnitude (MV)0.99[4]
Details
Mass2.55[2] M☉
Luminosity48.25[4] L☉
Surface gravity (log g)3.05[5] cgs
Temperature4,910[5] K
Metallicity [Fe/H]−0.01[5] dex
Age550[2] Myr
Other designations
b Cap, 41 Cap, CD−23° 17057, GC 30365, HD 206356, HIP 107128, HR 8285, SAO 190559, ADS 15223, CCDM J21420-2316[6]
Database references
SIMBADdata

41 Capricorni is a binary star[7] system in the southern constellation of Capricornus. It is faintly visible to the naked eye with an apparent visual magnitude of +5.24.[2] The distance to this star, based upon an annual parallax shift of 19.06±0.29 mas,[1] is around 171 light years. It is moving closer with a heliocentric radial velocity of −45 km/s.[4]

This is a yellow K-type giant star with a stellar classification of K0 III.[3] At the age of around 550[2] million years it has become a red clump star,[8] which indicates it is generating energy via helium fusion at its core. It has an estimated 2.55[2] times the mass of the Sun and is radiating 48[4] times the Sun's luminosity from its photosphere at an effective temperature of 4,910 K.[5] The magnitude 11.5 companion lies at an angular separation of 5.5″, as of 2008.[7]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Takeda2008 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. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Soubiran2010 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Alves2000 was invoked but never defined (see the help page).