| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | FLOCK 4Y 25 |
| Spacetrack catalog number | 13121 | 55027 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 25 21:29 | 2023 Mar 25 21:47 |
| Time of closest approach (UTC) | 2023 Feb 02 14:58:37.087 |
| Minimum distance | 110.099 km |
| Height difference | 3.026 km |
| Relative speed | 15.209 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 38.4°N, 91.0°E |
| Height | 529 km |
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