| Primary satellite | Secondary satellite |
| Name | Cosmos 407 Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 5175 | 34525 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Feb 24 18:47 | 2021 Feb 24 18:45 |
| Time of closest approach (UTC) | 2021 Jan 20 07:46:07.242 |
| Minimum distance | 7.052 km |
| Height difference | 7.008 km |
| Relative speed | 13.457 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 66.1°N, 143.7°W |
| Height | 776 km |
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