| Primary satellite | Secondary satellite |
| Name | Cosmos 1340 | FLOCK 4X 39 |
| Spacetrack catalog number | 13067 | 51029 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Sep 25 10:49 | 2023 Sep 25 10:48 |
| Time of closest approach (UTC) | 2023 Jun 04 02:59:59.461 |
| Minimum distance | 2978.411 km |
| Height difference | 37.477 km |
| Relative speed | 13.492 km/s |
| Angle between velocity vectors | 125° |
| Geographic position | 67.1°N, 32.6°W |
| Height | 485 km |
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