| Primary satellite | Secondary satellite |
| Name | PAYLOAD A | Cosmos 858 |
| Spacetrack catalog number | 27430 | 9443 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:18 | 2024 Dec 23 09:57 |
| Time of closest approach (UTC) | 2024 Dec 27 16:27:54.280 |
| Minimum distance | 4.062 km |
| Height difference | -1.292 km |
| Relative speed | 12.239 km/s |
| Angle between velocity vectors | 110° |
| Geographic position | 73.8°N, 179.7°E |
| Height | 798 km |
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