HD 125823

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HD 125823
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 14h 23m 02.24s[1]
Declination −39° 30′ 42.5″[1]
Apparent magnitude (V) +4.41
Characteristics
Spectral type B7IIIp
U−B color index −0.75
B−V color index −0.18
Variable type SX Ari
Astrometry
Radial velocity (Rv) +8 km/s
Proper motion (μ) RA: -24.15 ± 0.13[1] mas/yr
Dec.: -21.90 ± 0.13[1] mas/yr
Parallax (π) 7.13 ± 0.16[1] mas
Distance 460 ± 10 ly
(140 ± 3 pc)
Absolute magnitude (MV) −1.27[2]
Details
Mass 5.69 ± 0.30[2] M
Radius 3.7 ± 0.5[2] R
Luminosity 1,175[2] L
Surface gravity (log g) 4.20 ± 0.12[2] cgs
Temperature 17,700[2] K
Rotation 8.817744 days[2]
Other designations
V761 Centauri, a Centauri, CD−38 9329, HD 125823, HIP 70300, HR 5378, SAO 205497.
Database references
SIMBAD data

HD 125823, also known as V761 Centauri and a Centauri, is a star in the constellation Centaurus. It is a blue-white B-type giant with a mean apparent magnitude of +4.41. It is approximately 460 light years from Earth. It is classified as an SX Arietis type variable star and its brightness varies from magnitude +4.38 to +4.43 with a period of 8.82 days.

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d e f g North, P. (June 1998), "Do SI stars undergo any rotational braking?", Astronomy and Astrophysics, 334: 181–187, Bibcode:1998A&A...334..181N, arXiv:astro-ph/9802286Freely accessible