> This combination of events could explain the presence of highly magnetic rocks detected in a region near the south pole, on the moon’s far side. As it happens, one of the largest impact basins — the Imbrium basin — is located in the exact opposite spot on the near side of the moon. The researchers suspect that whatever made that impact likely released the cloud of plasma that kicked off the scenario in their simulations.

I wish it was associated with Tycho, so we could call it Tycho Magnetic Anomaly 1 (TMA-1). But Imbrium Magnetic Anomaly (IMA-1) also sounds fine for me. Or perhaps more precisely Imbrium Magnetic Antipodal Anomaly (IMA2).