19 Canum Venaticorum

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19 Canum Venaticorum
Observation data
Epoch J2000      Equinox J2000
Constellation Canes Venatici
Right ascension 13h 15m 31.95263s[1]
Declination +40° 51′ 18.7516″[1]
Apparent magnitude (V) 5.77[2] (5.87 + 9.48)[3]
Characteristics
Evolutionary stage main sequence[4]
Spectral type A7 V[5]
B−V color index 0.198±0.004[2]
Distance
238 ± 3 ly
(72.9 ± 0.8 pc)
Absolute magnitude (MV)1.42[2]
Argument of periastron
(ω)
(secondary)		273.3°
Details
19 CVn A
Myr
HR 5004, SAO 44531, WDS J13155+4051[10]
Database references
SIMBADdata

19 Canum Venaticorum is a

apparent visual magnitude of 5.77.[2] The pair orbit each other with a period of 219.2 years and an eccentricity of 0.686.[7] The system is moving closer to the Earth with a heliocentric radial velocity of −21 km/s.[6]

The magnitude +5.87 primary, component A, is an

projected rotational velocity of 110 km/s.[4] As of 2012, its companion, designated component B, is a magnitude 9.48 star located 0.60 arcseconds from the primary along a position angle of 58°.[3]

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    S2CID 119257644
    .
  3. ^
    doi:10.1086/323920
    .
  4. ^
    S2CID 55586789
    .
  5. doi:10.1086/128449
    .
  6. ^
    S2CID 59451347
    . A61.
  7. ^ a b c Double Stars Information Circular (PDF), vol. 187, International Astronomical Union, Commission G1, October 2015, retrieved 2019-01-26
  8. ^
    Bibcode:1999A&A...352..555A
    .
  9. ^
    S2CID 33401607
    .
  10. ^ "19 CVn". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-26.
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