| Primary satellite | Secondary satellite |
| Name | Cosmos 1346 Rocket | STERNULA-1 |
| Spacetrack catalog number | 13121 | 55054 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Mar 22 10:54 | 2023 Mar 22 05:36 |
| Time of closest approach (UTC) | 2023 Feb 02 10:20:44.577 |
| Minimum distance | 10.886 km |
| Height difference | 4.254 km |
| Relative speed | 15.197 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 10.5°N, 166.3°E |
| Height | 529 km |
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