NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC691
Basic Information
Location and Magnitude
Right Ascension: 1:50:41.7
Declination: +21:45:37
Constellation: ARI
Visual Magnitude: 11.4
Historic Information
Discoverer: Herschel W.
Year of discovery: 1786
Discovery aperture: 18.7
Observational
Summary description: F, cL, vglbM
Sub-type: Sbc
Steve's Notes
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NGC 691
18" (11/22/03): bright, large, slightly elongated E-W, ~2.0'x1.5'. Fairly sharp concentration with a well-defined 45" core surrounded by an unconcentrated halo. A close pair of mag 9-10 stars (uncatalogued) is just off the northeast edge! NGC 691 is the brightest in the NGC 691 group (also called the NGC 697 group) that includes NGC 678, NGC 680, NGC 691, NGC 694, NGC 695, NGC 697, IC 167, IC 1730 and others.
13" (9/29/84): fairly faint, fairly large, almost round, very diffuse, weak concentration. A close double star is off the NE edge. Located 15' SSE of NGC 680 in the NGC 697 group.