AW Canum Venaticorum

AW Canum Venaticorum

A light curve for AW Canum Venaticorum, plotted from Hipparcos data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Canes Venatici
Right ascension 13h 51m 47.47504s[2]
Declination +34° 26′ 39.2474″[2]
Apparent magnitude (V) 4.76[3] (4.73 – 4.85)[4]
Characteristics
Spectral type M3- IIIa[5]
B−V color index 1.611±0.006[3]
Variable type Lb[4]
Astrometry
Radial velocity (Rv)−44.21±0.25[3] km/s
Proper motion (μ) RA: −20.477[2] mas/yr
Dec.: −31.626[2] mas/yr
Parallax (π)5.2734 ± 0.2529 mas[2]
Distance620 ± 30 ly
(190 ± 9 pc)
Absolute magnitude (MV)−1.56[3]
Details
Mass2.18±0.16[6] M☉
Radius117.41+4.25
−4.57[6] R☉
Luminosity2,387±213[6] L☉
Surface gravity (log g)0.98±0.30[7] cgs
Temperature3,529±25[7] K
Metallicity [Fe/H]−0.09±0.11[7] dex
Age1.11±0.21[6] Gyr
Other designations
AW CVn, BD+35° 2496, FK5 3102, HD 120933, HIP 67665, HR 5219, SAO 63793[8]
Database references
SIMBADdata

AW Canum Venaticorum is a variable star[4] in the constellation Canes Venatici. It is visible to the naked eye with a nominal apparent visual magnitude of 4.76.[3] The distance to this star, as measured from its annual parallax shift of 5.3 mas,[2] is around 620 light years. It is moving closer with a heliocentric radial velocity of −44 km/s.[3]

At the age of 1.1 billion years,[6] this is an evolved red giant star with a stellar classification of M3- IIIa.[5] It is a slow irregular variable of type Lb, with a brightness that ranges between magnitudes 4.73 and 4.85.[4] The star has 2.2[6] times the mass of the Sun and has expanded to 117[6] times the Sun's radius. It is radiating 2,387[6] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,529 K.[7]

  1. ^ Cite error: The named reference HipDataAccess was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference gcvs was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference perkins1989 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h Cite error: The named reference Baines2018 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference prugniel2011 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).