Proper motions of the Tr 37 cluster members between HD 206267 (marked with a large white star) and IC 1396A with parallax errors below 0.2 mas and proper motion errors below 2mas yr⁻¹, shown over the IRAC 1 3.6 μm/Spitzer map of the region. The arrows represent the proper motion with respect to the mean cluster proper motion pm_RA = −2.5 ± 1.5 mas yr⁻¹, pm_Dec = −4.6 ± 1.3 mas yr⁻¹. The stars associated with IC 1396A, including V390 Cep (marked with a blue circle), have proper motions consistent with the cluster, with no evidence of strong acceleration in the plane of the sky.