It did look LMC-ish in size and shape at first glance but the LMC was much higher in the sky and much further south. Colinmlegg's suggestion sounds probable, as per the very (very) crude TL below
I forgot to mention that my camera isn't modded. Thanks for all your input everyone!!
80 x 15sec frames:
https://www.youtube.com/watch?v=5A-iA24rxK4