| 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 28 12:40 | 2023 Mar 27 06:34 |
| Time of closest approach (UTC) | 2023 Feb 04 12:10:15.153 |
| Minimum distance | 437.143 km |
| Height difference | 4.283 km |
| Relative speed | 3.233 km/s |
| Angle between velocity vectors | 25° |
| Geographic position | 14.3°S, 128.0°W |
| Height | 769 km |
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