| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | FLOCK 4Y 6 |
| Spacetrack catalog number | 13121 | 55066 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 22 10:54 | 2023 Mar 22 02:53 |
| Time of closest approach (UTC) | 2023 Feb 02 02:16:04.629 |
| Minimum distance | 12.023 km |
| Height difference | 1.751 km |
| Relative speed | 15.208 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 40.4°N, 77.8°W |
| Height | 529 km |
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