| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 109 |
| Spacetrack catalog number | 34459 | 41919 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 09:30 | 2024 Dec 22 08:04 |
| Time of closest approach (UTC) | 2024 Dec 24 17:58:06.272 |
| Minimum distance | 2.935 km |
| Height difference | 2.609 km |
| Relative speed | 14.706 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 26.5°S, 132.4°E |
| Height | 786 km |
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