Eta Cephei
Star
Eta Cephei is a star in the northern circumpolar constellation of Cepheus. With an apparent visual magnitude of 3.4, this is a third magnitude star that, according to the Bortle Dark-Sky Scale, is readily visible to the naked eye. Parallax... Wikipedia
Magnitude: 3.426
Luminosity: 9.7±0.5 L☉
Constellation: Cepheus
Absolute magnitude (MV): 2.631
B−V color index: +0.918
U−B color index: +0.613