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Location: Seven Kings
(51.5667°N, 0.1000°E)
Time: 19:23:12
(UTC+00:00)
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Close Encounter Details

Primary satelliteSecondary satellite
NameEnvisatNOSS 1 (C)
Spacetrack catalog number273868835
Radar cross sectionlargelarge
Epoch of two-line elements (UTC)2021 Sep 17 10:522021 Sep 17 13:07
Time of closest approach (UTC)2021 Aug 09 12:53:54.239
Minimum distance20.977 km
Height difference-3.938 km
Relative speed12.545 km/s
Angle between velocity vectors113°
Geographic position63.5°N, 44.6°E
Height777 km
 

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