Hi @bcazabonne,
Thanks for your reply.
What I’m doing is determining orbit for different objects, using different arcs, for about hundreds times. The number of measurements for every OD is small. And just one parameter is estimated.
So I fill it’s another issue.
I found an old topic. I’ll try to follow it. It may be caused by improperly using of java Objects in python.
https://forum.orekit.org/t/python-wrapper-outofmemoryerror-gc-overhead-limit-exceeded/531