| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 37484 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 08 21:29 | 2024 Sep 02 15:58 |
| Time of closest approach (UTC) | 2024 Aug 07 06:52:56.781 |
| Minimum distance | 30.635 km |
| Height difference | 1.482 km |
| Relative speed | 13.563 km/s |
| Angle between velocity vectors | 130° |
| Geographic position | 73.4°N, 91.0°E |
| Height | 776 km |
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