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That's a very Kerbally orbit -- a lot of the perilunes go below 20 km (!)

https://arxiv.org/abs/2105.10088

Related (linked by the paper):

https://www.nasa.gov/feature/jpl/new-nasa-radar-technique-fi... ("New NASA Radar Technique Finds Lost Lunar Spacecraft")

https://youtu.be/dBHbLV7xEhc Scott Manley on this