When using Orekit for orbit prediction with an atmospheric drag model, the predicted orbit 10 days out shows a 6-second difference compared to STK

13

I’m using actual ephemeris data from April 2024 for the comparison. The orekit-data was updated in December.
I updated the
EOP-v1.1.txt (239.9 KB)
file in STK to the latest version, and as I suspected, the difference is now only a few tens of milliseconds. It seems safe to rule out this factor.