| Primary satellite | Secondary satellite |
| Name | Cosmos 921 Rocket | MISRSAT |
| Spacetrack catalog number | 10096 | 58497 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:26 | 2025 Nov 17 20:36 |
| Time of closest approach (UTC) | 2025 Oct 16 08:46:43.749 |
| Minimum distance | 208.934 km |
| Height difference | -2.904 km |
| Relative speed | 3.875 km/s |
| Angle between velocity vectors | 30° |
| Geographic position | 42.6°S, 24.6°E |
| Height | 632 km |
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