| Primary satellite | Secondary satellite |
| Name | Cosmos 773 Rocket | Cosmos 1741 |
| Spacetrack catalog number | 8344 | 16681 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 12 08:20 | 2021 Apr 12 11:39 |
| Time of closest approach (UTC) | 2021 Mar 05 02:03:25.653 |
| Minimum distance | 4.603 km |
| Height difference | -4.598 km |
| Relative speed | 14.254 km/s |
| Angle between velocity vectors | 145° |
| Geographic position | 22.4°S, 137.9°E |
| Height | 781 km |
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