| 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 Mar 02 18:08 | 2021 Mar 06 02:43 |
| Time of closest approach (UTC) | 2021 Jan 18 02:21:11.766 |
| Minimum distance | 131.865 km |
| Height difference | 3.343 km |
| Relative speed | 12.779 km/s |
| Angle between velocity vectors | 115° |
| Geographic position | 52.9°S, 62.2°W |
| Height | 597 km |
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