| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | Shijian 5 |
| Spacetrack catalog number | 23088 | 25731 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 15 19:24 | 2021 Jan 15 19:29 |
| Time of closest approach (UTC) | 2020 Dec 04 00:16:37.407 |
| Minimum distance | 58.649 km |
| Height difference | -1.292 km |
| Relative speed | 13.737 km/s |
| Angle between velocity vectors | 135° |
| Geographic position | 69.8°S, 43.4°W |
| Height | 868 km |
|