| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | FLOCK 4Y 15 |
| Spacetrack catalog number | 13121 | 55068 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 25 21:29 | 2023 Mar 25 17:47 |
| Time of closest approach (UTC) | 2023 Feb 01 23:16:56.482 |
| Minimum distance | 172.079 km |
| Height difference | 0.870 km |
| Relative speed | 15.189 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 5.5°S, 24.3°W |
| Height | 532 km |
|