| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 40230 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 24 15:01 | 2023 Mar 21 19:49 |
| Time of closest approach (UTC) | 2023 Feb 04 12:10:41.448 |
| Minimum distance | 1082.352 km |
| Height difference | 4.219 km |
| Relative speed | 3.392 km/s |
| Angle between velocity vectors | 26° |
| Geographic position | 17.0°S, 128.5°W |
| Height | 770 km |
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