NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC637
Basic Information
Location and Magnitude
Right Ascension: 1:43:3.0
Declination: +64:2:12
Constellation: CAS
Visual Magnitude: 8.2
Historic Information
Discoverer: Herschel W.
Year of discovery: 1787
Discovery aperture: 18.7
Observational
Summary description: Cl, pS, B ___DREYER___ vF st
Sub-type: I3p
Steve's Notes
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NGC 637
18" (10/25/08): very pretty cluster at 283x. The central 2.5' region is rich and contains roughly 3 dozen stars including a mag 10.2/11.4 double (STI 264 = ADS 1342) at 9.5" separation. A third mag 11 star forms a wide trio 46" to the south. An arc or "C" shaped curve of stars passes through the central double and opens to the north. A chain of brighter stars begins at the center of the open end of the arc (on north side) and zigzags to the north and NE. A wide bright double (23" separation) sits at the east end of the central region. Finally another fainter linear chain of stars heads to the west of the central region. Within a 5' region, 50-60 stars are resolved.
13.1" (12/7/85): rich cluster of two dozen stars arranged in an arc. There are five bright stars including a mag 10/11.2 double star at 9" separation.
8" (1/1/84): 10 stars in cluster includes four mag 10 stars and fainter, mottled, over haze.