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53 Persei

This article is about d Persei. Not to be confused with δ (delta) Persei.
53 Persei
Location of 53 Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 04h 21m 33.16651s[1]
Declination 46° 29′ 55.9591″[1]
Apparent magnitude (V) 4.80[2]
Characteristics
Spectral type B4IV[3]
U−B color index −0.52[4]
B−V color index −0.03[4]
Variable type SPB[5]
Astrometry
Radial velocity (Rv)+7.30[6] km/s
Proper motion (μ) RA: +21.482[1] mas/yr
Dec.: −34.832[1] mas/yr
Parallax (π)6.8517 ± 0.2700 mas[1]
Distance480 ± 20 ly
(146 ± 6 pc)
Absolute magnitude (MV)−1.42[7]
Details
Mass5.9±0.1[8] M☉
Radius3.98±0.49[7] R☉
Luminosity779.8+213.3
−167.5[7] L☉
Surface gravity (log g)3.93±0.09[7] cgs
Temperature16,720[9] K
Rotational velocity (v sin i)15[10] km/s
Age50.1±9.3[8] Myr
Other designations
d Per, 53 Per, V469 Per, NSV 1560, BD+46°872, FK5 2319, GC 5256, HD 27396, HIP 20354, HR 1350, SAO 39483[11]
Database references
SIMBADdata

53 Persei is a single[12] variable star in the northern constellation of Perseus. It has the Bayer designation d Persei, while 53 Persei is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued point of light with an apparent visual magnitude of 4.80.[2] It is located approximately 480 light years away from the Sun, as determined from parallax, and is drifting further away with a radial velocity of +7.3 km/s.[6]

A visual band light curve for V469 Persei, plotted from data published by Huang et al. (1994)[13]

This star has a stellar classification of B4IV,[3] and was the prototype of a class of variable stars known as slowly pulsating B stars.[14] It was one of the first mid-B type variable stars in the northern hemisphere to be studied.[5] The star undergoes non-radial pulsations with a primary period of 2.36 days. Observation of the star with the BRITE satellite revealed eight separate frequencies in the star's light curve.[5]

53 Persei is around 50[8] million years old with a projected rotational velocity of 15 km/s.[10] It has six[8] times the mass of the Sun and four[7] times the Sun's radius. The star is radiating 780[7] times the luminosity of the Sun from its photosphere at an effective temperature of 16,720 K.[9]

  1. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference XHIP was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference lesh1968 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MermiliodUBV was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Niemczura2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ a b c d e f Cite error: The named reference Briquet2007 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Zorec2009 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Abt2002 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Huang was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference LeContel1989 was invoked but never defined (see the help page).
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