| Primary satellite | Secondary satellite |
| Name | YUNHAI 1 | Cosmos 2251 Rocket |
| Spacetrack catalog number | 41857 | 22676 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:00 | 2024 Dec 23 00:21 |
| Time of closest approach (UTC) | 2024 Dec 28 05:49:00.772 |
| Minimum distance | 3.973 km |
| Height difference | -2.930 km |
| Relative speed | 14.897 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 6.5°S, 2.4°E |
| Height | 782 km |
|