| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 38479 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 08 21:29 | 2024 Sep 05 12:24 |
| Time of closest approach (UTC) | 2024 Aug 06 01:32:08.968 |
| Minimum distance | 259.597 km |
| Height difference | 12.396 km |
| Relative speed | 14.822 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 46.1°S, 11.6°E |
| Height | 780 km |
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