HD 23753
Star in the constellation Taurus / From Wikipedia, the free encyclopedia
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]
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] |
Distance | 420 ± 10 ly (129 ± 3 pc) |
Absolute magnitude (MV) | 0.00[2] |
Details | |
Mass | 3.21±0.07[3] M☉ |
Radius | 3.2[6] R☉ |
Luminosity | 150.0+16.2 −14.8[3] L☉ |
Temperature | 11,535+80 −79[3] K |
Rotation | 0.6994 d[7] |
Rotational velocity (v sin i) | 335[3] km/s |
Age | 125[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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]