| Primary satellite | Secondary satellite |
| Name | NUDT-PHONESAT | KZ-1A R/B |
| Spacetrack catalog number | 40900 | 43637 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2021 Feb 25 12:39 | 2021 Feb 25 10:53 |
| Time of closest approach (UTC) | 2021 Jan 17 11:04:23.464 |
| Minimum distance | 2514.941 km |
| Height difference | 30.485 km |
| Relative speed | 15.136 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 29.2°S, 113.6°E |
| Height | 492 km |
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