| Primary satellite | Secondary satellite |
| Name | BEIJING 3B | FAST 2 (USA 228) |
| Spacetrack catalog number | 53587 | 37380 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 23 13:24 | 2024 Dec 23 18:59 |
| Time of closest approach (UTC) | 2024 Dec 27 18:23:02.459 |
| Minimum distance | 3.046 km |
| Height difference | -1.673 km |
| Relative speed | 15.012 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 25.2°S, 119.3°W |
| Height | 626 km |
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