| Primary satellite | Secondary satellite |
| Name | Cosmos 407 Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 5175 | 34146 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 06 04:11 | 2021 Mar 05 09:56 |
| Time of closest approach (UTC) | 2021 Jan 23 11:40:45.789 |
| Minimum distance | 23.419 km |
| Height difference | -0.591 km |
| Relative speed | 11.273 km/s |
| Angle between velocity vectors | 98° |
| Geographic position | 73.0°S, 60.0°W |
| Height | 790 km |
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