| Primary satellite | Secondary satellite |
| Name | SR | IRIDIUM 135 |
| Spacetrack catalog number | 46 | 43070 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Mar 04 09:56 | 2021 Mar 05 01:48 |
| Time of closest approach (UTC) | 2021 Jan 21 21:18:13.921 |
| Minimum distance | 11.244 km |
| Height difference | -0.331 km |
| Relative speed | 11.963 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 64.2°N, 157.6°E |
| Height | 790 km |
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