| Primary satellite | Secondary satellite |
| Name | SHIYUAN 3 (SY-3) | COSMOS 2251 DEB |
| Spacetrack catalog number | 33433 | 34582 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:19 | 2024 Dec 22 16:21 |
| Time of closest approach (UTC) | 2024 Dec 29 12:36:28.440 |
| Minimum distance | 4.005 km |
| Height difference | 4.000 km |
| Relative speed | 14.845 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 32.9°S, 102.0°E |
| Height | 798 km |
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