--- name: Diadem (α Com) constellation: Com created_by: 8mag created_date: 2022-01-21 17:00:00 updated_by: skybber updated_date: 2022-01-25 15:40:59.560502 --- a star that appears to the naked eye to be a 4.3-mag point. In fact, it is a double star, consisting of two components of 5.1mag brightness, but we cannot distinguish them with a small telescope. They orbit each other in 25.85 years.