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Explorer 11/Cluster Stage 4 - Close encounters

The following table lists the upcoming close encounters with all other known orbiting objects for which orbital elements are available (over 16000). Only objects which come within 5 km are included. Please note that the accuracy of these predictions is limited by the accuracy of the latest orbital elements. A position accuracy of approximately 1 km is typical. Click on a row to get more details about the encounter and a graphical representation.

Time (UTC) Distance Relative speed Other object
km km/s Name ID Radar cross section
2021 May 20 17:27:320.6068.804FENGYUN 1C DEB36735small
2021 May 21 03:47:334.00310.912COSMOS 2251 DEB36055small
2021 May 22 05:50:102.4394.500CZ-4C DEB40342large
2021 May 22 13:58:320.91610.934NIMBUS 2 DEB28613small
2021 May 23 04:41:543.4927.931Cosmos 154414819large