| Primary satellite | Secondary satellite |
| Name | Cosmos 1125 Rocket | CZ-4 DEB |
| Spacetrack catalog number | 11511 | 35330 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 14 06:50 | 2025 Nov 13 01:37 |
| Time of closest approach (UTC) | 2025 Oct 15 16:51:41.124 |
| Minimum distance | 33.989 km |
| Height difference | -1.745 km |
| Relative speed | 14.377 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 71.1°S, 78.3°E |
| Height | 789 km |
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