NGC663

(FrameSize=-' * -')

NGC663 = Cr20 = Mel.11 (Open Cluster) :the large cluster located to center,
NGC654 = Cr18 = Mel.9 (Open Cluster) :the small cluster located to upper right,
NGC659 = Cr19 = Mel.10 (Open Cluster) :the small cluster located to lower right.
[Cassiopeia]

Nov.14 1998, 21h52mJST (10min. Exposure)
Location: the Kasuo Pass, Awano town, Tochigi pref., Japan

Epsilon210c (21cm-reflector, f=628mm, F:3.0), Fuji-film SGA800


Object Data
NGC663 = Cr20 = Mel.11
Type of objectOpen Cluster Typee
ConstellationCassiopeia
R.A.01h 46.1m (2000.0) Dec.+61° 16' (2000.0)
Mag.(v)7.1 Mag.(p)-
Diameter11' Distance2600 light-year
noteContaining about 80 stars
NGC654 = Cr18 = Mel.9
Type of objectOpen Cluster Typed
ConstellationCassiopeia
R.A.01h 44.0m (2000.0) Dec.+61° 54' (2000.0)
Mag.(v)9.1 Mag.(p)-
Diameter5' Distance3800 light-year
noteContaining about 50 stars
NGC659 = Cr19 = Mel.10
Type of objectOpen Cluster Typed
ConstellationCassiopeia
R.A.01h 44.2m (2000.0) Dec.+60° 43' (2000.0)
Mag.(v)9.8 Mag.(p)-
Diameter5' Distance6200 light-year
noteContaining about 30 stars




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