| Primary satellite | Secondary satellite |
| Name | STRAND 1 | IRIDIUM 33 DEB |
| Spacetrack catalog number | 39090 | 35052 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 01 09:54 | 2021 Mar 01 16:29 |
| Time of closest approach (UTC) | 2021 Jan 22 13:00:15.786 |
| Minimum distance | 2.778 km |
| Height difference | -0.580 km |
| Relative speed | 14.770 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 71.3°S, 63.2°W |
| Height | 798 km |
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