| Primary satellite | Secondary satellite |
| Name | Cosmos 407 Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 5175 | 33773 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Feb 24 18:47 | 2021 Feb 24 18:52 |
| Time of closest approach (UTC) | 2021 Jan 19 05:04:27.737 |
| Minimum distance | 7.776 km |
| Height difference | 7.357 km |
| Relative speed | 13.824 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 62.8°N, 93.7°W |
| Height | 774 km |
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