| Primary satellite | Secondary satellite |
| Name | Envisat | deb Kosmos-1275 |
| Spacetrack catalog number | 27386 | 13804 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:47 | 2025 Nov 17 10:43 |
| Time of closest approach (UTC) | 2025 Oct 20 00:37:19.542 |
| Minimum distance | 8.415 km |
| Height difference | -4.787 km |
| Relative speed | 14.952 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 70.3°N, 51.2°E |
| Height | 774 km |
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