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NGC 4100
Ursa Major
Penryn, California
April 2007 / January 2009
M 250 @ f9.3 (ag, ST-4)
ST-10XME LRGB 15 minute subs (Additional lum added 2009, 10 minute subs)

NGC 4100 is classified Sbc  Surface brightness is 12.9 magnitude, distance is 58 Mly.