| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 37280 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 26 21:57 | 2023 Sep 23 16:24 |
| Time of closest approach (UTC) | 2022 Aug 19 13:51:43.391 |
| Minimum distance | 1811.669 km |
| Height difference | 51.215 km |
| Relative speed | 14.943 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 26.2°N, 143.1°W |
| Height | 767 km |
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