| Primary satellite | Secondary satellite |
| Name | Cosmos 773 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 8344 | 30492 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 20 21:32 | 2021 Apr 20 23:36 |
| Time of closest approach (UTC) | 2021 Mar 04 18:57:58.304 |
| Minimum distance | 39.704 km |
| Height difference | 5.560 km |
| Relative speed | 7.797 km/s |
| Angle between velocity vectors | 63° |
| Geographic position | 62.1°N, 154.1°W |
| Height | 761 km |
|