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Vanguard 3 - 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 Apr 19 15:50:401.2628.125ITOS 1 Rocket4322large
2021 Apr 20 10:22:382.78511.481deb Agena D4453small
2021 Apr 21 02:58:481.6788.834FENGYUN 1C DEB30666small
2021 Apr 21 17:17:153.07411.681LEMUR 2 YNDRD44404small
2021 Apr 23 06:35:121.5102.115YAOGAN-30 Q44451large