A young open cluster located in Cassiopeia, estimated to contain about 400 members. The cluster contains at least 24 Be type stars which are B class stores that show distinctive hydrogen lines in their spectra and at least five blue stragglers. Also visible are two red super giant stars.
NGC 663
- Constellation: Cassiopeia
- Right Ascension: 01h 46.0m
- Declination: +61° 15′
- Distance: 6,850 ly
- Details
- Category: Open Clusters
- Telescope: Explore Scientific 127 Refractor
- Camera: Atik 314l+