| Primary satellite | Secondary satellite |
| Name | USA 308 | CZ-4 DEB |
| Spacetrack catalog number | 45876 | 27385 |
| Radar cross section | | small |
| Epoch of two-line elements (UTC) | 2021 Feb 28 19:42 | 2021 Mar 01 23:23 |
| Time of closest approach (UTC) | 2021 Jan 20 08:50:21.233 |
| Minimum distance | 44.148 km |
| Height difference | 0.750 km |
| Relative speed | 12.046 km/s |
| Angle between velocity vectors | 106° |
| Geographic position | 54.1°S, 157.9°W |
| Height | 597 km |
|