| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | Iridium 73 |
| Spacetrack catalog number | 35453 | 25344 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 19 15:23 | 2024 Dec 22 18:55 |
| Time of closest approach (UTC) | 2024 Dec 27 18:08:50.293 |
| Minimum distance | 2.302 km |
| Height difference | 0.224 km |
| Relative speed | 14.783 km/s |
| Angle between velocity vectors | 160° |
| Geographic position | 15.3°N, 111.6°E |
| Height | 723 km |
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