| Primary satellite | Secondary satellite |
| Name | Cosmos 1891 Rocket | CZ-2D DEB |
| Spacetrack catalog number | 18403 | 35274 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:58 | 2024 Dec 23 01:02 |
| Time of closest approach (UTC) | 2024 Dec 28 17:45:38.335 |
| Minimum distance | 4.987 km |
| Height difference | -3.818 km |
| Relative speed | 14.662 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 76.9°N, 14.7°W |
| Height | 961 km |
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