NGC/IC Project Restoration Effort

(This is a very very beta version)

NGC6643

Basic Information

Location and Magnitude

Right Ascension: 18:19:45.6
Declination: +74:34:6
Constellation: DRA
Visual Magnitude: 11.1

Historic Information

Discoverer: Schönfeld
Year of discovery: 1858
Discovery aperture: 3.0

Observational

Summary description: pB, pL, E 50°, 2 st p (Auw 40)
Sub-type: Sc

Steve's Notes

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NGC 6643

17.5" (7/9/88): fairly bright, large, oval 2:1 SW-NE, broadly concentrated halo.  Forms the east vertex of a triangle with two mag 11.5 stars 1.6' NW and 2.0' W.  Also a mag 15 star is off the west edge 1.4' from center. 

8" (6/19/82): faint, diffuse, moderately large, elongated SW-NE.  Two mag 12 stars are at the west edge.