| Primary satellite | Secondary satellite |
| Name | UWE-3 | Cosmos 1328 Rocket |
| Spacetrack catalog number | 39446 | 12988 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2026 Jan 18 19:51 | 2026 Jan 18 23:01 |
| Time of closest approach (UTC) | 2025 Dec 13 05:46:56.091 |
| Minimum distance | 87.029 km |
| Height difference | -0.409 km |
| Relative speed | 11.992 km/s |
| Angle between velocity vectors | 105° |
| Geographic position | 80.0°N, 0.1°W |
| Height | 615 km |
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