| Primary satellite | Secondary satellite |
| Name | NUDT-PHONESAT | FLOCK 3P 54 |
| Spacetrack catalog number | 40900 | 42014 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 12:39 | 2021 Feb 25 10:55 |
| Time of closest approach (UTC) | 2021 Jan 20 11:13:49.560 |
| Minimum distance | 447.207 km |
| Height difference | -2.884 km |
| Relative speed | 7.024 km/s |
| Angle between velocity vectors | 55° |
| Geographic position | 82.4°S, 150.2°W |
| Height | 510 km |
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