| Primary satellite | Secondary satellite |
| Name | MetOp-A | deb Chang Zheng 4 |
| Spacetrack catalog number | 29499 | 20913 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 25 12:29 | 2021 Jan 25 12:21 |
| Time of closest approach (UTC) | 2020 Nov 30 05:49:06.655 |
| Minimum distance | 26.260 km |
| Height difference | 2.569 km |
| Relative speed | 5.266 km/s |
| Angle between velocity vectors | 41° |
| Geographic position | 80.9°S, 72.9°W |
| Height | 848 km |
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