| Primary satellite | Secondary satellite |
| Name | Cosmos 1943 | deb Chang Zheng 4 |
| Spacetrack catalog number | 19119 | 20889 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 14 06:58 | 2021 Apr 14 13:32 |
| Time of closest approach (UTC) | 2021 Mar 05 10:31:14.644 |
| Minimum distance | 70.367 km |
| Height difference | 0.266 km |
| Relative speed | 4.499 km/s |
| Angle between velocity vectors | 35° |
| Geographic position | 37.2°S, 5.1°E |
| Height | 852 km |
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