QV Andromedae

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QV Andromedae
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 01h 16m 24.4904s[1]
Declination +48° 04′ 56.00453″[1]
Apparent magnitude (V) 6.608 (variable) [2]
Characteristics
Spectral type B9IIIpSi[3]
Apparent magnitude (U) 6.23[4]
Apparent magnitude (B) 6.559[2]
Apparent magnitude (V) 6.608[2]
Apparent magnitude (G) 6.5628[1]
Apparent magnitude (J) 6.554[5]
Apparent magnitude (H) 6.638[5]
Apparent magnitude (K) 6.657[5]
U−B color index -0.35[6]
B−V color index -0.04335[2]
Variable type ACV
Distance
740 ± 20 ly
(227 ± 5 pc)
Details
Rotational velocity (v sin i)
49±15[8] km/s
HIP 5939, HR 369, SAO 37067, TYC
 3268-835-1
Database references
SIMBADdata

QV Andromedae (abbreviated to QV And, also known as HR 369 in the

apparent visual magnitude is 6.6, so it can be seen by the naked eye under very favourable conditions. The brightness varies slightly following a periodic cycle of approximately 5.23 days.[3]

The

projected rotational velocity of 49 km/s,[8] with up to 0.05 magnitude variation of brightness during one rotation cycle. This leads to the classification of the star as an Alpha2 Canum Venaticorum variable.[3]

The variability of QV Andromedae was first identified in 1975,

variable star designation QV Andromedae in the 73rd namelist of variable stars in 1997.[12]

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    Bibcode:2000A&A...355L..27H
    .
  3. ^
    CDS ID II/250
    Accessed on line 2018-10-17.
  4. ^ "QV And". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved October 17, 2018.
  5. ^
    Bibcode:2003yCat.2246....0C
    .
  6. ^
    doi:10.1051/0004-6361/200810788
    .
  7. S2CID 59451347
    , A61.
  8. ^
    S2CID 118532653
    .
  9. S2CID 118665352
    .
  10. Bibcode:1974PhDT........61W. {{cite journal}}: Cite journal requires |journal= (help
    )
  11. doi:10.1051/aas:1998361
    .
  12. Bibcode:1985IBVS.2681....1K
    .
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