| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Kosmos-1656 |
| Spacetrack catalog number | 34022 | 18766 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:37 | 2024 Dec 23 04:40 |
| Time of closest approach (UTC) | 2024 Dec 28 05:12:50.089 |
| Minimum distance | 3.307 km |
| Height difference | 2.148 km |
| Relative speed | 14.024 km/s |
| Angle between velocity vectors | 139° |
| Geographic position | 15.7°N, 23.7°E |
| Height | 752 km |
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