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Cosmos 1821 Rocket - 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 Sep 20 23:44:514.42414.577Cosmos 514 Rocket6149large
2021 Sep 21 06:25:054.0868.516FENGYUN 1C DEB30291small
2021 Sep 21 20:24:364.9374.038Cosmos 911 Rocket10020large
2021 Sep 22 07:47:424.95114.637FENGYUN 1C DEB31696small
2021 Sep 22 20:47:414.34611.075Cosmos 180917241large
2021 Sep 23 00:00:083.6977.714M-405126medium
2021 Sep 25 22:40:314.18814.431PEGASUS DEB39306small