M 103 NGC 663

 
☀7.1mag
Ø 4.5'
OC [IV2p]
Cassiopeia

NameMrk 6
TypeOC [IV2p]
Constellation Cassiopeia
RA02:29:36.0
Dec+60:39:00.0
major_axis 4.5'
mag7.1
surface_bright-