Thanks!

Here is a fun comet orbit for you: https://dahlend.github.io/ketev/#t=2018-02-08.9717&sel=P/202...

This guy had a close encounter with saturn in 2018 and his orbit dramatically changed. At the time he was likely a very cold object that had frozen volatile material (usually water and CO/CO2), The PANSTARRS telescope found him in 2023 after he started giving off material and becoming a comet.

Because he came so close to saturn, it is likely that the estimate of the orbit before this is not super precise, as orbital mechanics is a chaotic thing and small changes of initial conditions become huge changes later.