Xi1 Canis Majoris

For other star systems with this Bayer designation, see Xi Canis Majoris.
Xi1 Canis Majoris
Diagram showing star positions and boundaries of the Canis Major constellation and its surroundings


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[1]
Variable type β Cep[1]
Astrometry
Distance2050 ± 900 ly
(630 ± 280 pc)
Details
Mass13.7 ± 0.9[1] M☉
Radius7.1 ± 0.9[1] R☉
Luminosity25,000[1] L☉
Surface gravity (log g)3.83 ± 0.20[1] cgs
Temperature27,100 ± 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 Majoris (ξ1 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

  1. 1 2 3 4 5 6 7 8 9 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:0902.1314Freely accessible, Bibcode:2009AN....330..317H, doi:10.1002/asna.200811187


This article is issued from Wikipedia - version of the 12/1/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.