| Primary satellite | Secondary satellite |
| Name | deb Chang Zheng 4 | deb Kosmos-839 |
| Spacetrack catalog number | 20862 | 18471 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:49 | 2024 Dec 22 12:11 |
| Time of closest approach (UTC) | 2024 Dec 27 11:42:53.276 |
| Minimum distance | 4.116 km |
| Height difference | -4.105 km |
| Relative speed | 14.259 km/s |
| Angle between velocity vectors | 139° |
| Geographic position | 61.7°N, 153.0°E |
| Height | 903 km |
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