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(52246) Donaldjohanson is a Main Belt asteroid target of opportunity that the Lucy mission will fly by in April 2025. In August 2020 it was revealed to have an exceptionally high amplitude and long period lightcurve. We propose here to test the possibility that this extreme lightcurve is produced by a synchronous binary. Such a system can explain both the amplitude and period with physically reasonable component shapes. The observations will take advantage of the only opportunity prior to 2025 when such a binary could be resolved by HST during the unusually close perihelic opposition in December 2020. The identification of a binary impacts the choice of target acquisition software to be used by the Lucy spacecraft during flyby.