14 Persei

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14 Persei
Location of 14 Per (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 02h 44m 05.15918s[1]
Declination +44° 17′ 49.3488″[1]
Apparent magnitude (V) 5.43[2]
Characteristics
Spectral type G0Ib[2]
B−V color index +0.86[3]
Distance
1,900 ± 100 ly
(570 ± 30 pc)
Absolute magnitude (MV)−1.57[2]
Details
Myr
HR 800, SAO 38289[5]
Database references
SIMBADdata

14 Persei is a single

apparent visual magnitude is 5.43.[2] The object is slowly moving closer to the Earth with a heliocentric radial velocity of −1.2 km/s.[1]

The

projected rotational velocity of 8.7 km/s.[4] The star is radiating 372[4] times as much luminosity compared to the Sun from its enlarged photosphere at an effective temperature of 5,624 K.[4]

14 Persei has been calculated to lie within the

Cepheid instability strip although it is not considered to be variable. Uncertainty in the absolute magnitude means that the star may actually lie near the instability strip but not on it. Small periodic radial velocity variations are seen, but an order of magnitude or more smaller than for Cepheid variables and with longer periods than would be expected for pulsations. The cause of the radial velocity changes and the difference between variable and non-variable stars within the instability strip is unknown.[10]

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    doi:10.1093/pasj/60.4.781
    .
  3. doi:10.1088/0004-6256/147/6/137
    .
  4. ^
    doi:10.1093/pasj/psu066
    .
  5. ^ "14 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-31.
  6. S2CID 14878976
    .
  7. doi:10.1086/190662
    .
  8. doi:10.1086/191373
    .
  9. doi:10.1086/319957
    .
  10. S2CID 119678211
    .
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