| Primary satellite | Secondary satellite |
Name | Cosmos 1821 Rocket | FENGYUN 1C DEB |
Spacetrack catalog number | 17526 | 31484 |
Radar cross section | large | small |
Epoch of two-line elements (UTC) | 2021 Jan 23 19:53 | 2021 Jan 23 02:04 |
Time of closest approach (UTC) | 2020 Nov 28 00:51:01.026 |
Minimum distance | 12.024 km |
Height difference | 2.373 km |
Relative speed | 14.624 km/s |
Angle between velocity vectors | 175° |
Geographic position | 13.4°N, 83.2°W |
Height | 997 km |
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