46 Capricorni

This article is about c1 Capricorni. For other stars with this Bayer designation, see c Capricorni.
46 Capricorni
Observation data
Epoch J2000      Equinox J2000
Constellation Capricornus
Right ascension 21h 45m 00.25455s[1]
Declination −09° 04′ 56.7478″[1]
Apparent magnitude (V) 5.10[2]
Characteristics
Spectral type G8Iab[3] or G7.5II-IIICN0.5[4]
B−V color index 1.108±0.001[2]
Astrometry
Radial velocity (Rv)−15.52±0.15[3] km/s
Proper motion (μ) RA: +12.80[5] mas/yr
Dec.: −1.31[5] mas/yr
Parallax (π)4.1489 ± 0.1673 mas[1]
Distance790 ± 30 ly
(241 ± 10 pc)
Absolute magnitude (MV)−1.81[2]
Details
Mass4.64±0.53[6] M☉
Radius32.6±2.3[3] R☉
Luminosity (bolometric)627[6] L☉
Surface gravity (log g)2.00[3] cgs
Temperature4,837±18[3] K
Metallicity [Fe/H]+0.01[3] dex
Other designations
c1 Cap, 46 Cap, BD−09°5829, GC 30448, HD 206834, HIP 107382, HR 8311, SAO 145637, PPM 205561, GSC 05788-01167[7]
Database references
SIMBADdata

46 Capricorni is a solitary[8] star located around 790 light years away from the Sun in the southern constellation of Capricornus, near the northern border with Aquarius. It is visible to the naked eye as a dim, yellow-hued point of light with an apparent visual magnitude of +5.10.[2] 46 Cap is also known by its Bayer designation of c Capricorni (c Cap), and occasionally as c1 Capricorni to distinguish it from the nearby star c2 Capricorni.[9] It is moving closer to the Earth with a heliocentric radial velocity of −15.5 km/s.[3]

This star has received a stellar classification of G8Iab,[3] which suggests it is a G-type supergiant star, as well as G7.5II-IIICN0.5,[4] which instead indicates a luminosity class between a giant and a bright giant. Abundance analysis suggests the star has not yet passed the first dredge-up.[3] It has 4.6[6] times the mass of the Sun and has expanded to 33[3] times the Sun's radius. The star is radiating 627[6] times the luminosity of the Sun from its photosphere at an effective temperature of 4,837 K.[3]

  1. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i j k Cite error: The named reference Usenko2015 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Hohle2010 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).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference xref was invoked but never defined (see the help page).