| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 2251 DEB |
| Spacetrack catalog number | 27386 | 37985 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 24 15:01 | 2023 Mar 21 22:10 |
| Time of closest approach (UTC) | 2023 Feb 05 07:15:21.984 |
| Minimum distance | 152.922 km |
| Height difference | -1.864 km |
| Relative speed | 3.186 km/s |
| Angle between velocity vectors | 25° |
| Geographic position | 9.7°S, 129.2°E |
| Height | 770 km |
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