HD 23753

HD 23753
Image of the Pleiades star cluster
HD 23753 in a long exposure of the Pleiades open cluster circled in red
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 03h 48m 20.81702s[1]
Declination +23° 25′ 16.5006″[1]
Apparent magnitude (V) 5.44[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type B9 Vn[4]
B−V color index −0.067±0.008[2]
Astrometry
Radial velocity (Rv)+7.6±0.5[5] km/s
Proper motion (μ) RA: +19.481[1] mas/yr
Dec.: −47.434[1] mas/yr
Parallax (π)7.7224 ± 0.1918 mas[1]
Distance420 ± 10 ly
(129 ± 3 pc)
Absolute magnitude (MV)0.00[2]
Details
Mass3.21±0.07[3] M☉
Radius3.2[6] R☉
Luminosity150.0+16.2
−14.8[3] L☉
Temperature11,535+80
−79[3] K
Rotation0.6994 d[7]
Rotational velocity (v sin i)335[3] km/s
Age125[8] Myr
Other designations
NSV 1321, BD+22° 563, HD 23753, HIP 17776, HR 1172, SAO 76215[9]
Database references
SIMBADdata

HD 23753 is a single[10] star in the equatorial zodiac constellation of Taurus, and is a member of the Pleiades open cluster.[11] It is dimly visible to the naked eye with an apparent visual magnitude of 5.44.[2] The distance to this star, as determined from its annual parallax shift of 7.7 mas,[1] is about 420 light years. It is moving further from the Earth with a heliocentric radial velocity of +8 km/s.[5] The star is positioned near the ecliptic and so is subject to lunar occultations.[12]

This is a B-type main-sequence star with a stellar classification of B9 Vn,[4] where the 'n' indicates "nebulous" lines due to rapid rotation. It is 125[8] million years old with a projected rotational velocity of 335 km/s,[3] completing a full revolution about its axis every 16.79 hours.[7] HD 23753 has been catalogued as a suspected variable star with the designation NSV 1321,[13] although the amplitude is no more than 0.1 magnitude and it may even be suitable for a photometric standard.[14] Wraight et al. report that STEREO detected very shallow eclipses, with a period of 2.2663 days, during which the brightness falls by 1%.[15]

HD 23753 has 3.21[3] times the mass of the Sun and 3.2[6] times the Sun's radius. It is radiating 150[3] times the Sun's luminosity from its photosphere at an effective temperature of 11,535 K.[3]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1972 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference cadars2001 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Rebull2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Su2006 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference White2001 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eitter1977 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference gcvs was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Adelman2000 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Wraight was invoked but never defined (see the help page).