| Primary satellite | Secondary satellite |
| Name | AO-91 | COSMOS 2251 DEB |
| Spacetrack catalog number | 43017 | 37089 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Jan 26 14:39 | 2023 Jan 25 10:51 |
| Time of closest approach (UTC) | 2022 Dec 06 18:24:04.091 |
| Minimum distance | 521.630 km |
| Height difference | -39.177 km |
| Relative speed | 14.434 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 63.2°N, 71.6°E |
| Height | 746 km |
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