Suspected binary asteroid!
Faint mag drop of only 0.8 mag! 
Raphaël Lallemand (GAIAMOONS) wrote on Dec 8 on PLANOCCULT:
The main body is 131.0 km wide; the potential satellite is estimated to have a size between 2 and 30 km. The duration of the satellite occultation should be at least 1 s for the shortest estimate, and about 10 s for the primary in the middle of centrality.
→ We recommend a maximum exposure time around 500 ms, less if possible. You may record from 5 minutes before to 5 minutes after the observation.
The uncertainty zone is very wide. The satellite was previously observed far from the primary, so the uncertainty band is ± 1100 km. Any observer located within the uncertainty band is therefore encouraged to participate.
Last update: 2025 Dec 14,
Occult Watcher Cloud:
https://cloud.occultwatcher.net/event/1812-146-98241-649713-U035293
GAIAMOONS link:
https://gaiamoons.imcce.fr/occ.php?p=59729