| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Chang Zheng 4 |
| Spacetrack catalog number | 35459 | 20850 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 20 16:06 | 2024 Dec 22 18:22 |
| Time of closest approach (UTC) | 2024 Dec 27 03:12:10.815 |
| Minimum distance | 2.572 km |
| Height difference | -1.240 km |
| Relative speed | 8.489 km/s |
| Angle between velocity vectors | 69° |
| Geographic position | 67.7°S, 70.0°W |
| Height | 805 km |
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