| Primary satellite | Secondary satellite |
| Name | NOSS 3-3 (C) | FENGYUN 1C DEB |
| Spacetrack catalog number | 28541 | 39114 |
| Radar cross section | | small |
| Epoch of two-line elements (UTC) | 2021 Apr 15 02:36 | 2021 Apr 06 11:37 |
| Time of closest approach (UTC) | 2021 Mar 04 10:11:54.760 |
| Minimum distance | 8.609 km |
| Height difference | 2.413 km |
| Relative speed | 14.661 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 33.0°N, 31.9°E |
| Height | 877 km |
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