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Xi1 Canis Majoris

Xi1 Canis Majoris
Diagram showing star positions and boundaries of the Canis Major constellation and its surroundings
Cercle rouge 100%.svg

Location of ξ1 Canis Majoris (circled)
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
Variable type β Cep
Astrometry
Distance 2050 ± 900 ly
(630 ± 280 pc)
Details
Mass 13.7 ± 0.9 M
Radius 7.1 ± 0.9 R
Luminosity 25,000 L
Surface gravity (log g) 3.83 ± 0.20 cgs
Temperature 27,100 ± 1,200 K
Rotational velocity (v sin i) 20 ± 7 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
Database references
SIMBAD data

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 and its brightness varies from magnitude +4.33 to +4.36 with a period of 5.03 hours.



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