The open cluster NGC 2287 is a cluster apparently rich in multiple stars and several other spectroscopically
interesting objects. We report the first extended proper-motion membership survey of the cluster.
UBV photometry of 146 proper-motion stars is also included and compared to earlier data. Colormagnitude
and two-color diagrams are presented. The proper-motion-based membership probabilities
indicate that most of the spectroscopic binaries are members of the cluster, as are the three Hg-Mn
stars, and at least four of the K giants. The bright He-weak star HD 49333 does not appear to be a
cluster member. A ZAMS fit to a color-magnitude diagram of the most likely members gives a distance
modulus of (m—M)= 9.15.