Collision avoidance manoeuvres are being executed on Copernicus Sentinel-1B to reduce the risk of collision with an unknown object, potentially occurring at 10:20 UTC on 11 May.

Five Copernicus Sentinel-1B data download links through the European Data Relay Satellite System (EDRS), taking place between 05:30 UTC and 16:00 UTC on 11 May, had to be cancelled due to these orbit manoeuvres.

SAR acquisitions taking place slightly before and during this period may have been affected.