Just brilliant Dennis!
Fabulous to see "amateurs" pushing the limits and going off the well worn and beaten track of the usual suspects, bravo.
Did a little googling and found this interesting arxiv paper. The abstract and introduction are about as far as I got but this caught my eye "Nereid has the most unusual photometric history of all objects in the Solar
System."
https://arxiv.org/ftp/arxiv/papers/0804/0804.2835.pdf