| Primary satellite | Secondary satellite |
| Name | Sich 1 | deb Chang Zheng 4 |
| Spacetrack catalog number | 23657 | 20877 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Dec 14 04:03 | 2025 Dec 14 02:55 |
| Time of closest approach (UTC) | 2025 Jul 23 06:41:51.927 |
| Minimum distance | 3066.781 km |
| Height difference | 43.414 km |
| Relative speed | 13.694 km/s |
| Angle between velocity vectors | 130° |
| Geographic position | 66.3°N, 29.3°W |
| Height | 598 km |
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