| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | FLOCK 4Y 2 |
| Spacetrack catalog number | 13121 | 55074 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 27 03:39 | 2023 Mar 26 17:20 |
| Time of closest approach (UTC) | 2023 Feb 01 21:42:22.306 |
| Minimum distance | 170.051 km |
| Height difference | 1.065 km |
| Relative speed | 15.192 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 0.5°N, 1.5°W |
| Height | 530 km |
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