Xi1 Canis Majoris

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For other star systems with this Bayer designation, see Xi Canis Majoris.
Xi1 Canis Majoris
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 06h 31m 51.3s
Declination −23° 25′ 06″
Apparent magnitude (V) +4.34
Characteristics
Spectral type B1 III[1]
Variable type β Cep[1]
Astrometry
Distance 2050 ± 900 ly
(630 ± 280 pc)
Details
Mass 13.7 ± 0.9[1] M
Radius 7.1 ± 0.9[1] R
Luminosity 25,000[1] L
Surface gravity (log g) 3.83 ± 0.20[1] cgs
Temperature 27,100 ± 1,200[1] K
Rotational velocity (v sin i) 20 ± 7[1] km/s
Other designations
4 Canis Majoris, HR 2387, HD 46328, CD −23° 3991, HIP 31125, SAO 171895, GC 8496, ADS 5176, CCDM 06319-2325

Xi1 Canis Majoris1 CMa, ξ1 Canis Majoris) is a star in the constellation Canis Major. It is approximately 2051 light years from Earth.

ξ1 Canis Majoris is a blue-white B-type subgiant with a mean apparent magnitude of +4.34. It is classified as a Beta Cephei type variable star[1] and its brightness varies from magnitude +4.33 to +4.36 with a period of 5.03 hours.

References[edit]

  1. ^ a b c d e f g h i Hubrig, S. et al. (January 2009), "New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars", Astronomische Nachrichten 330 (4): 317, arXiv:0902.1314, Bibcode:2009AN....330..317H, doi:10.1002/asna.200811187