czsky/en/star/hr5054.md

465 B

name constellation created_by created_date updated_by updated_date
Mizar a Alcor (ζ a 80 UMa) UMa editor.cs 2022-01-21 17:00:00 skybber 2022-02-03 20:43:24.035809

The most famous double star, which the Arabs used to refer to as "the guide" or "the tester of the sharpness of sight". The mutual distance of the two stars is 12', so that the healthy eye can distinguish them almost always without difficulty. They make a nice pair in binocular as well.