| Primary satellite | Secondary satellite |
| Name | Cosmos 1891 Rocket | deb Kosmos-970 |
| Spacetrack catalog number | 18403 | 10878 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:58 | 2024 Dec 23 06:12 |
| Time of closest approach (UTC) | 2024 Dec 28 21:18:35.415 |
| Minimum distance | 3.583 km |
| Height difference | -3.353 km |
| Relative speed | 9.943 km/s |
| Angle between velocity vectors | 84° |
| Geographic position | 65.4°N, 51.6°W |
| Height | 968 km |
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