| Primary satellite | Secondary satellite |
| Name | NOSS 3-3 (C) | FENGYUN 1C DEB |
| Spacetrack catalog number | 28541 | 31095 |
| Radar cross section | | small |
| Epoch of two-line elements (UTC) | 2021 Apr 15 02:36 | 2021 Apr 16 12:42 |
| Time of closest approach (UTC) | 2021 Mar 04 16:36:06.822 |
| Minimum distance | 68.855 km |
| Height difference | 11.438 km |
| Relative speed | 13.868 km/s |
| Angle between velocity vectors | 150° |
| Geographic position | 50.0°S, 132.4°E |
| Height | 1262 km |
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