| Primary satellite | Secondary satellite |
| Name | DX 1 | Cosmos 1025 Rocket |
| Spacetrack catalog number | 40071 | 10974 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2026 Jan 15 14:53 | 2026 Jan 15 14:46 |
| Time of closest approach (UTC) | 2025 Dec 10 15:06:50.918 |
| Minimum distance | 10.810 km |
| Height difference | 0.905 km |
| Relative speed | 15.123 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 62.3°N, 179.8°W |
| Height | 607 km |
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