| Primary satellite | Secondary satellite |
| Name | Cosmos 773 Rocket | IRIDIUM 102 |
| Spacetrack catalog number | 8344 | 41920 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 12 08:20 | 2021 Apr 12 05:08 |
| Time of closest approach (UTC) | 2021 Mar 04 02:54:50.906 |
| Minimum distance | 72.399 km |
| Height difference | -0.407 km |
| Relative speed | 3.937 km/s |
| Angle between velocity vectors | 31° |
| Geographic position | 63.9°S, 156.6°E |
| Height | 801 km |
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