| Primary satellite | Secondary satellite |
| Name | Envisat | Cosmos 1023 Rocket |
| Spacetrack catalog number | 27386 | 10962 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Nov 28 20:46 | 2023 Nov 28 00:14 |
| Time of closest approach (UTC) | 2023 Sep 27 19:53:28.615 |
| Minimum distance | 20.197 km |
| Height difference | -0.983 km |
| Relative speed | 8.622 km/s |
| Angle between velocity vectors | 71° |
| Geographic position | 68.3°N, 133.1°E |
| Height | 777 km |
|