NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC643

Basic Information

Location and Magnitude

Right Ascension: 1:35:0.7
Declination: -75:33:24
Constellation: HYI
Visual Magnitude:

Historic Information

Discoverer: Herschel J.
Year of discovery: 1835
Discovery aperture: 18.3

Observational

Summary description: vF, pS, R, vglbM
Sub-type: OCL

Corwin's Notes

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NGC 643.  This is a star cluster in the SMC.  The RC3 incorrectly calls a
galaxy by this name.  That galaxy is the one that de Vaucouleurs called "NGC 
643B".

"NGC 643A", by the way, is another SMC star cluster, while "NGC 643C" is a
spiral galaxy seen edge on.  None of these are related to NGC 643 except by
the near coincidences of their locations on the sky.

Steve's Notes

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NGC 643

30" (11/6/10 - Coonabarabran, 264x): fairly faint, moderately large, round, 1.2' diameter, broad weak concentration without a distinct core, some mottling but no resolution.  Located 8.5' NNE of mag 8 HD 10041.  This object is an outlying cluster of the SMC on the southeast side.