Quote from Dreyer's New General Catalog (NGC):
"Considerably faint, large, moderately extended 164°, very little brighter middle, resolvable, but mottled."
Quote from The First Reference Catalog of Bright Galaxies:
"No definite nucleus. Bright middle. Foreshortened bar: 1.7x0.3 arc minutes (with dark lanes). Well resolved arms with faint outer extensions. Slightly asymmetric."
NGC 7640 is a barred spiral galaxy in Andromeda. A rough distance estimate for NGC 7640 is 19 Million Light Years, and at that distance its true diameter would be about 59,240 light years.
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George Normandin, KAS
September 9th, 2001