| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | deb Delta 89 |
| Spacetrack catalog number | 33994 | 7959 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 12:16 | 2024 Dec 23 04:31 |
| Time of closest approach (UTC) | 2024 Dec 24 14:56:21.209 |
| Minimum distance | 4.508 km |
| Height difference | 2.775 km |
| Relative speed | 14.406 km/s |
| Angle between velocity vectors | 148° |
| Geographic position | 71.0°N, 138.6°W |
| Height | 769 km |
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