| Primary satellite | Secondary satellite |
| Name | STRAND 1 | IRIDIUM 33 DEB |
| Spacetrack catalog number | 39090 | 37562 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 01 09:54 | 2021 Feb 27 18:54 |
| Time of closest approach (UTC) | 2021 Jan 18 02:41:20.849 |
| Minimum distance | 6.407 km |
| Height difference | 6.144 km |
| Relative speed | 13.781 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 81.0°N, 45.7°W |
| Height | 788 km |
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