| Primary satellite | Secondary satellite |
| Name | ARGOS | FENGYUN 1C DEB |
| Spacetrack catalog number | 25634 | 30138 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 12 20:22 | 2021 Apr 14 02:16 |
| Time of closest approach (UTC) | 2021 Mar 05 10:43:53.619 |
| Minimum distance | 24.788 km |
| Height difference | 1.568 km |
| Relative speed | 1.782 km/s |
| Angle between velocity vectors | 14° |
| Geographic position | 81.1°N, 62.4°E |
| Height | 848 km |
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