The star Epsilon Ursae Majoris. It is an A0 subgiant of magnitude 1.8 with strong lines of chromium in its spectrum. It is a variable of the Alpha2 Canum Venaticorum type, fluctuating by a few tenths of a magnitude with a period of 5.1 days. It lies 83 l.y. away.
Subjects: Astronomy and Astrophysics.