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Radial velocities for 50 of the 52 galaxies brighter than 15.1 mag within the boundaries of Zwicky-Herzog cluster 16 in field 158 are used to establish that the region is a composite of (1) part of the Coma I cloud of the Local Supercluster, (2) part of the supercluster of which the Coma cluster is a member, (3) the NGC 4169 group, and (4) other galaxies. The Coma supercluster is detected to a radial distance from the center of the Coma cluster of 14.2 deg (31.5 Mpc for H = 55 km/s per Mpc).
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Chincarini et al. (1976) studied this question.
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