I ran Starry Night for Ballarat and an hour either side of midnight, last night. It reproduces many (but not all) satellites, but none fitted the images. However, given the LMC's position in the sky, it wasn't a polar orbiting satellite as the path tracked from west to east.
If the exposures were 40 seconds duration and 30 seconds between images, it appears the object was emitting flashes (ie rotating and reflecting sunlight) for just a short period during each exposure (suggested by Dave Herald).
Curious.
DN
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