NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC3998
Basic Information
Location and Magnitude
Right Ascension: 11:57:55.9
Declination: +55:27:14
Constellation: UMA
Visual Magnitude: 10.7
Historic Information
Discoverer: Herschel W.
Year of discovery: 1789
Discovery aperture: 18.7
Observational
Summary description: cB, pS, R, vg, smbM
Sub-type: S0
Corwin's Notes
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NGC 3998. See NGC 3594.
Steve's Notes
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NGC 3998
18" (4/30/11): very bright, fairly large, slightly elongated 5:4 NNW-SSE, 1.8' diameter. Sharply concentrated with a small, blazing core that increases to a very bright stellar nucleus. NGC 3990 lies 3' due W. Brightest in a group of 6 galaxies in a 30' field.
17.5" (4/6/91): very bright, fairly small, slightly elongated 4:3 NW-SE, sharply concentrated with a round very bright well-defined core, increases to stellar nucleus. Located 5.6' SSE of mag 9.2 SAO 28204. Forms a pair with NGC 3990 3.0' W. Brightest in a group including NGC 3982, NGC 3972 and NGC 3977.