| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 1818 DEB |
| Spacetrack catalog number | 27386 | 36941 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Jun 02 13:06 | 2023 May 31 00:48 |
| Time of closest approach (UTC) | 2023 Apr 05 08:38:01.926 |
| Minimum distance | 79.801 km |
| Height difference | 5.507 km |
| Relative speed | 14.589 km/s |
| Angle between velocity vectors | 156° |
| Geographic position | 42.4°S, 113.0°E |
| Height | 780 km |
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