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We show that the proper motion of the Becklin-Neugebauer (BN) object isconsistent with its dynamical ejection from the theta^1 Ori C binary, contraryto recent claims by Gomez et al. Continued radio observations of BN and futureprecise astrometric observations of theta^1 Ori C with SIM and the Orion NebulaCluster with GAIA can constrain the properties of this ejection event, withimplications for theories of how the nearest example of massive star formationis proceeding.

Astrometry of the Dynamical Ejection of the Becklin-Neugebauer Object from theta^1 Ori C