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The possible physical relation between the closely projected open clustersNGC 1912 (M 38) and NGC 1907 is investigated. Previous studies suggested aphysical pair based on similar distances, and the present study explores inmore detail the possible interaction. Spatial velocities are derived fromavailable radial velocities and proper motions, and the past orbital motions ofthe clusters are retrieved in a Galactic potential model. Detailed N-bodysimulations of their approach suggest that the clusters were born in differentregions of the Galaxy and presently experience a fly-by.Comment: Accepted for publication in A&A, 7 pages, 10 figure

NGC 1912 and NGC 1907: A close encounter between open clusters?