| Primary satellite | Secondary satellite |
| Name | SHIYUAN 3 (SY-3) | COSMOS 2251 DEB |
| Spacetrack catalog number | 33433 | 34672 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:19 | 2024 Dec 18 02:30 |
| Time of closest approach (UTC) | 2024 Dec 27 16:36:40.374 |
| Minimum distance | 4.847 km |
| Height difference | -4.835 km |
| Relative speed | 14.501 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 69.8°S, 167.9°W |
| Height | 808 km |
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