NGC/IC Project Restoration Effort
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NGC3911
Basic Information
Location and Magnitude
Right Ascension: 11:49:22.1
Declination: +24:56:19
Constellation: LEO
Visual Magnitude: 13.3
Historic Information
Discoverer: Herschel W.
Year of discovery: 1785
Discovery aperture: 18.7
Observational
Summary description: vF, S, p of 2
Sub-type: SBbc
Corwin's Notes
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NGC 3911 is the brighter and following of two galaxies (the other is NGC
3920). It was found by WH whose position is very good. JH also saw it, but
because his RA was off, thought it a nova and noted, "Follows III 341 [N3911]
on same parallel." The galaxy he thought to be his father's was actually the
nova, however. Since JH's RA is about 45 seconds too far east, this, and his
note, have confused the identifications of the two objects ever since.
Neither d'A nor Dreyer found a nebula at JH's position, of course. In spite
of the correct NGC position for N3911, most modern catalogues place the two in
numerical order. This necessitates changing the RA's of both.
In placing NGC 3911 on the following galaxy, I am giving precedence to the
historical order of discovery, attributing to WH the brighter galaxy he
actually saw. Since JH was the first to see the fainter preceding object, the
number NGC 3920 given by Dreyer to h 996 (JH's nova) necessarily applies to
it. This leaves the numbers out of RA order, and also disagrees with the NGC
notes about which is preceding and following, but better represents the
history in this case.
Steve's Notes
=====
NGC 3911
17.5" (4/15/93): fairly faint, fairly small, elongated 4:3 NW-SE, brighter core, faint stellar nucleus. NGC 3920 lies 10' W. The identifications of NGC 3911 and NGC 3920 are reversed in all modern catalogues.