| Primary satellite | Secondary satellite |
| Name | Envisat | COSMOS 1818 COOLANT |
| Spacetrack catalog number | 27386 | 50781 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 Jul 03 22:29 | 2022 Jun 29 18:10 |
| Time of closest approach (UTC) | 2022 May 28 07:31:11.080 |
| Minimum distance | 36.965 km |
| Height difference | 0.070 km |
| Relative speed | 10.394 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 63.6°S, 65.0°W |
| Height | 788 km |
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