| Primary satellite | Secondary satellite |
| Name | Cosmos 2251 Rocket | ZY 1 |
| Spacetrack catalog number | 22676 | 38038 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Dec 05 00:00 | 2023 Dec 05 03:12 |
| Time of closest approach (UTC) | 2023 Sep 25 11:09:14.405 |
| Minimum distance | 41.870 km |
| Height difference | -1.770 km |
| Relative speed | 4.402 km/s |
| Angle between velocity vectors | 34° |
| Geographic position | 44.0°S, 24.9°W |
| Height | 794 km |
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