| Primary satellite | Secondary satellite |
| Name | Kosmos-1104 | Cosmos 1266 |
| Spacetrack catalog number | 11378 | 12409 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Apr 01 19:47 | 2023 Apr 01 22:07 |
| Time of closest approach (UTC) | 2023 Jan 30 12:27:08.063 |
| Minimum distance | 24.800 km |
| Height difference | -5.492 km |
| Relative speed | 8.990 km/s |
| Angle between velocity vectors | 75° |
| Geographic position | 64.7°N, 104.0°E |
| Height | 979 km |
|