NGC 2623 is a well-studied triple system included in Arp's atlas of peculiar galaxies (Arp 1966) as ARP 243. Bright tidal tails are observed in both optical and near-infrared wavelengths; these tails suggest that a merger of two or three galaxies has occurred. This system is the merged result of the collision. The central masses have become indistinguishable. Only one true nucleus is thought to exist. NGC 2623 is very bright in both infrared and radio, a signature of disturbed gas and rapid star formation. Based on the published red shift, (Hubble Constant of 62 Km/sec per Mpc) a rough distance estimate for NGC 2623 is 291 million light years, with a diameter (including the tails) of about 203,000 light years.
Dreyer's description from the New General Catalog(NGC): Very faint, very small, round, brighter middle, resolvable, but mottled.
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George Normandin, KAS
March 16th, 1999