| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Feng Yun 1B |
| Spacetrack catalog number | 34115 | 23261 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:46 | 2024 Dec 22 00:13 |
| Time of closest approach (UTC) | 2024 Dec 24 05:49:06.994 |
| Minimum distance | 2.633 km |
| Height difference | 2.545 km |
| Relative speed | 14.712 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 66.5°S, 6.7°W |
| Height | 703 km |
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