czsky/en/star/hr7528.md

463 B

name constellation created_by created_date updated_by updated_date
δ Cygni Cyg editor.cs 2022-01-21 17:00:00 skybber 2022-01-27 17:51:06.031621

a binary star, the magnitudes of the components are 2.9 and 6.3, their separation is 2.4" and their distance from Earth is 124ly. It is a good test for a 10-15 cm telescope. The main component is reported by observers as white, pale blue or even blue-green, the minor component appears pale blue to blue.