| Primary satellite | Secondary satellite |
| Name | Cosmos 1091 Rocket | Nimbus 2 Debris |
| Spacetrack catalog number | 11321 | 25526 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 10:22 | 2024 Dec 22 13:53 |
| Time of closest approach (UTC) | 2024 Dec 25 09:39:00.717 |
| Minimum distance | 3.926 km |
| Height difference | -3.385 km |
| Relative speed | 10.785 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 77.7°N, 42.1°E |
| Height | 974 km |
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