| Primary satellite | Secondary satellite |
| Name | Envisat | Cosmos 1898 |
| Spacetrack catalog number | 27386 | 18585 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Sep 09 11:15 | 2024 Sep 08 22:03 |
| Time of closest approach (UTC) | 2024 Aug 07 12:01:31.001 |
| Minimum distance | 27.344 km |
| Height difference | 1.471 km |
| Relative speed | 11.329 km/s |
| Angle between velocity vectors | 99° |
| Geographic position | 73.1°N, 108.6°W |
| Height | 776 km |
|