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| | Brocchi's Cluster, Collinder 399, the Coathanger Cluster |
 | | In the late 1980s, Pavlovskaya and Filipova were looking for common proper motion of open clusters, and found that the Coathanger was sharing spacial motion with about 10 other clusters, including the Plejades (M45), NGC 6633, 6709, 6882, 6885, and IC 4665. |
 | | Collinder 399 was found to approach us at 18 km/sec. |
 | | Brian Skiff of Lowell Observatory has investigated astrometrical data of the stars counted to Collinder 399 acquired by ESA's Hipparcos satellite, and found new evidence that this object may be an asterism instead of a cluster (Sky and Telescope article and photometric data). |
| seds.lpl.arizona.edu /messier/xtra/ngc/brocchi.html (360 words) |
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