| Primary satellite | Secondary satellite |
| Name | SENTINEL 1B | Cosmos 1726 Rocket |
| Spacetrack catalog number | 41456 | 16496 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Nov 17 19:20 | 2025 Nov 17 14:15 |
| Time of closest approach (UTC) | 2025 Oct 14 00:23:25.187 |
| Minimum distance | 190.349 km |
| Height difference | 2.593 km |
| Relative speed | 8.282 km/s |
| Angle between velocity vectors | 66° |
| Geographic position | 76.5°N, 160.5°E |
| Height | 596 km |
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