| Primary satellite | Secondary satellite |
| Name | COSMOS 2251 DEB | IRIDIUM 33 DEB |
| Spacetrack catalog number | 33933 | 38474 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2023 Oct 02 12:13 | 2023 Oct 01 12:13 |
| Time of closest approach (UTC) | 2023 Jun 12 10:05:26.394 |
| Minimum distance | 1755.191 km |
| Height difference | -8.817 km |
| Relative speed | 13.111 km/s |
| Angle between velocity vectors | 123° |
| Geographic position | 74.2°N, 39.9°W |
| Height | 789 km |
|