| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | IRIDIUM 169 |
| Spacetrack catalog number | 47 | 43926 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Mar 07 13:08 | 2021 Mar 08 05:01 |
| Time of closest approach (UTC) | 2021 Jan 24 12:42:08.761 |
| Minimum distance | 21.178 km |
| Height difference | -1.461 km |
| Relative speed | 14.200 km/s |
| Angle between velocity vectors | 144° |
| Geographic position | 40.3°N, 9.5°W |
| Height | 774 km |
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