NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC4657
Basic Information
Location and Magnitude
Right Ascension: 12:44:6.9
Declination: +32:12:33
Constellation: CVN
Visual Magnitude: 12.4
Historic Information
Discoverer: Herschel W.
Year of discovery: 1787
Discovery aperture: 18.7
Observational
Summary description: !, pF, L, E 90° ±, nf of 2
Sub-type: I/P
Steve's Notes
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NGC 4657
18" (5/14/07): The north end of NGC 4656 has a remarkable, fairly bright 2' extension (NGC 4657), hooking to the east at a 45¡ angle from the major axis (the "blade" of the hockey stick). There is a faint, small, detached knot beyond the east end of the "blade" that appears to have broken off. This unusual bend and knot is likely a starburst region of NGC 4656 and the result of a prior tidal interaction with its more massive neighbor, NGC 4631.
13.1" (4/10/86): fairly faint, fairly small, elongated NNW-SSE. NGC 4657 is attached at the NE end of the remarkable galaxy NGC 4656 and elongated at nearly a right angle to the curving section of NGC 4656 just west.