A Proper-Motion Membership Analysis of Stars in the Vicinity of the Orion Nebula

Proper-motion membership probabilities are given for 630 stars located in the vicinity of the Orion Nebula. The region studied is roughly centered on the Trapezium and covers approximately 7 sq deg. It excludes the central 0.5 sq deg of bright nebula emission. Outsdide the emission region, accurate proper motions are available for 630 stars brighter than B = 14.0. This work, combined with other proper-motion membership analyses, provides rather comaplete membership data for the brighter stars located in the direction of the Orion Nebula.