| Primary satellite | Secondary satellite |
| Name | Cosmos 2278 Rocket | CZ-4 R/B DEB |
| Spacetrack catalog number | 23088 | 37623 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 12:37 | 2021 Jan 09 06:13 |
| Time of closest approach (UTC) | 2020 Dec 02 22:42:33.826 |
| Minimum distance | 31.204 km |
| Height difference | 1.048 km |
| Relative speed | 14.626 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 54.2°S, 57.1°W |
| Height | 864 km |
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