31 Camelopardalis

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31 Camelopardalis

A visual band light curve for TU Camelopardalis, adapted from West (1968)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation
Camelopardalis
Right ascension 05h 54m 57.82481s[2]
Declination +59° 53′ 18.1314″[2]
Apparent magnitude (V) 5.20[3]
Characteristics
Spectral type A2V[4] (A0IV + F0)[5]
U−B color index +0.03[6]
B−V color index +0.010[3]
Variable type β Lyr[7]
Distance
460 ± 10 ly
(140 ± 5 pc)
Semi-amplitude
(K1)
(primary)		78.0 km/s
Details
31 Cam A
Rotational velocity (v sin i)
75[10] km/s
HR 2027, SAO 25447[4]
Database references
SIMBADdata

31 Camelopardalis is a

light years away from the Sun,[2] and the system is drifting closer to the Earth with a radial velocity of −3 km/s.[8]

This is a single-lined

variable star designation TU Cameleopardis, while 31 Camelopardalis is the Flamsteed designation.[4] The primary eclipse lowers the visual magnitude to 5.29, while the secondary eclipse lowers it to 5.22.[7]

References

  1. Bibcode:1968BANS....2..259W
    .
  2. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  3. ^
    S2CID 119257644
    .
  4. ^ a b c "31 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 29 April 2017.
  5. Bibcode:1980A&AS...42...15M
    .
  6. Bibcode:1986EgUBV........0M
    .
  7. ^
    hdl:10995/27061
    .
  8. ^
    Bibcode:1953GCRV..C......0W
    .
  9. ^
    doi:10.1086/111159
    .
  10. ^
    S2CID 55586789
    .
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