| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 33 DEB |
| Spacetrack catalog number | 34588 | 36011 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:00 | 2024 Dec 22 20:18 |
| Time of closest approach (UTC) | 2024 Dec 26 23:56:21.213 |
| Minimum distance | 3.160 km |
| Height difference | 3.144 km |
| Relative speed | 2.186 km/s |
| Angle between velocity vectors | 17° |
| Geographic position | 42.2°S, 87.4°E |
| Height | 761 km |
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