| Primary satellite | Secondary satellite |
| Name | Cosmos 921 Rocket | CZ-6A DEB |
| Spacetrack catalog number | 10096 | 61818 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:26 | 2025 Nov 16 16:57 |
| Time of closest approach (UTC) | 2025 Oct 13 18:17:17.409 |
| Minimum distance | 1027.392 km |
| Height difference | -4.323 km |
| Relative speed | 5.987 km/s |
| Angle between velocity vectors | 47° |
| Geographic position | 67.6°S, 18.4°E |
| Height | 615 km |
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