THE 10 MOST BRIGHTEST STARS
A.R. DECL. MAG. LIGHT YEARS Alfa 00h 08m 23.17s +29° 05' 27.0 2.07 97 Alpheratz, Alpherat, Al'faret, Al'ferats, Sirrah, Sirah; Testa della donna in catene; binary spettroscopic star; variable Alpha2 Canum Venaticorum, Vmax = +2.02m, Vmin = +2.06m, P = 0.966222 d Beta 01h 09m 43.80s +35° 37' 15.0 2.07 199 Mirach, Merach, Mirac, Mirak, Mirakh, Merak, Mirar, Mirath, Mirax, El Mizar, Al Mizar; la Cintura; variable star Gamma 02h 03m 53.92s +42° 19' 47.5 2.10 355 Almach, Almaak, Alamak, Almak, Almaach, Alamac; star triple Delta 00h 39m 19.60s +30° 51' 40.4 3.27 101 Sadiradra, Saderazra, Sadir Elazra; binary spettroscopic star; varying suspicious star 51 And 01h 37m 59.50s +48° 37' 42.6 3.59 174 upsilon Per; Anfal, El Enfal; multiple star Omicron 23h 01m 55.25s +42° 19' 33.5 3.62 692 quadruple star; variable Gamma Cassiopeiae, Vmax = +3.58m, Vmin = +3.78m Lambda 23h 37m 33.71s +46° 27' 33.0 3.81 84 variable RS Canum Venaticorum, Vmax = 3.69m, Vmin = 3.97m, P = 54.20 d Mu 00h 56m 45.10s +38° 29' 57.3 3.86 136 multiple star Zeta 00h 47m 20.39s +24° 16' 02.6 4.08 181 variable Beta Lyrae; variable RS Canum Venaticorum, Vmax = 3.92m, Vmin = 4.14m, P = 17.7695 d Upsilon 01h 36m 47.98s +41° 24' 23.0 4.10 44 Adhab, Azab; has 3 planets
OBJECTS
M 31 Spiral galaxy, mag. 4.8, diameter 4° NGC 752 Open cluster, mag. 7.0, diameter 45'
BOUNDARIES
Perseo,Cassiopea,Lucertola,Pegaso,Pesci,Triangolo