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