(FrameSize=90' * 90')

NGC637 = Cr17 (Open Cluster)
[Cassiopeia]

Nov.5 1999, 22h57m JST (10min. Exposure)
Location: Mt.Asama, Tsumagoi Village, Gunma pref., Japan
Epsilon210c (21cm-reflector, f=628mm, F:3.0), Fuji-film SGA800

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Object Data

NGC637 = Cr17
Type of object	Open Cluster	Type	d
Constellation	Cassiopeia
R.A.	01h 41.8m (2000.0)	Dec.	+64° 02' (2000.0)
Mag.(v)	7.1	Mag.(p)	-
Diameter	3'	Distance	4500 light-year
note	Containing about 20 stars

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