| Primary satellite | Secondary satellite |
| Name | Cosmos 1680 Rocket | CZ-2D R/B |
| Spacetrack catalog number | 16012 | 44548 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 09 17:21 | 2021 Apr 10 00:00 |
| Time of closest approach (UTC) | 2021 Mar 03 08:10:15.444 |
| Minimum distance | 14.387 km |
| Height difference | 3.500 km |
| Relative speed | 11.615 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 73.4°N, 6.5°W |
| Height | 772 km |
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