| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | ICEYE-X21 |
| Spacetrack catalog number | 13121 | 55049 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 25 21:29 | 2023 Mar 25 22:50 |
| Time of closest approach (UTC) | 2023 Feb 02 10:10:59.933 |
| Minimum distance | 86.247 km |
| Height difference | 1.023 km |
| Relative speed | 15.211 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 44.4°N, 161.7°E |
| Height | 530 km |
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