Most likely: Counting error by 18SPCS, too much holiday boozeSecond option:Simorgh launch on Jun 23 was a failure, but a small piece of the rocket stage makes orbit even though the payload doesn't. Like 1985-053 where the Zenit-2 separation motor covers made orbit but nothing else did. Out of sequence because it took a while for the USto detect and identify the new debris.Not sure I'd say this is a *likely* scenario, but it wouldn't be unprecedented
For all the space geeks out there...I realized that somehow, with all the launches, we lost track and the last 3 launches (oneweb, jilin, & yaogan) have the incorrect international designators. We are fixing them now, but might have errors. Please be patient. @SpaceTrackOrg
@18SPCS is working to fix international designators starting with launch 2021-060.