| Primary satellite | Secondary satellite |
| Name | Diademe D-1D | COSMOS 2251 DEB |
| Spacetrack catalog number | 2680 | 33920 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:08 | 2024 Dec 22 02:29 |
| Time of closest approach (UTC) | 2024 Dec 27 01:25:17.179 |
| Minimum distance | 3.900 km |
| Height difference | 0.115 km |
| Relative speed | 9.300 km/s |
| Angle between velocity vectors | 75° |
| Geographic position | 39.2°S, 110.6°E |
| Height | 710 km |
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