Eta Cassiopeiae
Star system
Eta Cassiopeiae is a binary star system in the northern constellation of Cassiopeia. Its binary nature was first discovered by William Herschel in August 1779. Based upon parallax measurements, the distance to this system is 19.42 light-years from... Wikipedia
Distance to Earth: 19.4 light years
Absolute magnitude: 3.45
Apparent magnitude (V): 1.99
Declination: +57° 48′ 54.6758″
Right ascension: 00h 49m 06.29070s
Age: 5.4 ± 0.9 Gyr
B−V color index: +0.58/1.39