| Primary satellite | Secondary satellite |
| Name | DUCHIFAT 1 | CZ-4 DEB |
| Spacetrack catalog number | 40021 | 35269 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 19:43 | 2021 Mar 08 14:31 |
| Time of closest approach (UTC) | 2021 Jan 22 04:31:45.643 |
| Minimum distance | 7.430 km |
| Height difference | -5.146 km |
| Relative speed | 15.008 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 17.7°S, 133.8°E |
| Height | 597 km |
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