| Primary satellite | Secondary satellite |
| Name | Cosmos 1408 Rocket | RESURS 01 DEB |
| Spacetrack catalog number | 13553 | 46874 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 19:54 | 2021 Apr 11 17:14 |
| Time of closest approach (UTC) | 2021 Feb 25 15:56:48.319 |
| Minimum distance | 507.375 km |
| Height difference | -1.707 km |
| Relative speed | 6.795 km/s |
| Angle between velocity vectors | 54° |
| Geographic position | 74.9°N, 50.3°E |
| Height | 645 km |
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