| Primary satellite | Secondary satellite |
| Name | Cosmos 1091 Rocket | Kosmos-2004 |
| Spacetrack catalog number | 11321 | 19826 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 10:22 | 2024 Dec 23 00:32 |
| Time of closest approach (UTC) | 2024 Dec 28 23:35:23.749 |
| Minimum distance | 4.156 km |
| Height difference | -4.136 km |
| Relative speed | 14.601 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 17.8°S, 136.4°W |
| Height | 986 km |
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