| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | FLOCK 4Y 18 |
| Spacetrack catalog number | 13121 | 55023 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 22 10:54 | 2023 Mar 22 03:40 |
| Time of closest approach (UTC) | 2023 Feb 02 20:15:58.874 |
| Minimum distance | 141.801 km |
| Height difference | -5.959 km |
| Relative speed | 15.146 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 74.5°S, 51.9°E |
| Height | 567 km |
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