Castor

Details Castor Castor

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000eaa..booke5019.&link_type=abstract

"Encyclopedia of Astronomy and Astrophysics, Edited by Paul Murdin, article 5019. Bristol: Institute of Physics Publishing, 2001

Astronomy and Astrophysics

Astrophysics

Stars, Individual Stellar Objects

Scientific paper

The star α Geminorum, apparent magnitude 1.58. This is in fact a very complex multiple star system. Observed with a moderately powerful telescope it is seen to be double. The components of this binary system are a pair of white stars, α Gem A (apparent magnitude 1.9, spectral type A1V), and α Gem B (3.0 and A2V). Their current separation is 3.1'' at position angle 76°; the period is 420 years. Ea...

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