| Primary satellite | Secondary satellite |
| Name | Cosmos 2279 Rocket | Cosmos 1727 Rocket |
| Spacetrack catalog number | 23093 | 16511 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 16 14:04 | 2021 Jan 16 14:42 |
| Time of closest approach (UTC) | 2020 Dec 06 19:56:46.868 |
| Minimum distance | 2.286 km |
| Height difference | -1.383 km |
| Relative speed | 11.822 km/s |
| Angle between velocity vectors | 107° |
| Geographic position | 78.1°S, 160.3°W |
| Height | 1004 km |
|