| Primary satellite | Secondary satellite |
| Name | Cosmos 773 Rocket | deb Agena D |
| Spacetrack catalog number | 8344 | 4205 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 12 08:20 | 2021 Apr 12 12:35 |
| Time of closest approach (UTC) | 2021 Mar 07 07:37:40.521 |
| Minimum distance | 23.427 km |
| Height difference | 3.080 km |
| Relative speed | 1.192 km/s |
| Angle between velocity vectors | 9° |
| Geographic position | 59.1°S, 69.6°E |
| Height | 799 km |
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