| Primary satellite | Secondary satellite |
| Name | deb Explorer IX | FENGYUN 1C DEB |
| Spacetrack catalog number | 85 | 35153 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 19:23 | 2021 Apr 12 00:53 |
| Time of closest approach (UTC) | 2021 Feb 28 09:01:28.255 |
| Minimum distance | 125.874 km |
| Height difference | -3.682 km |
| Relative speed | 7.734 km/s |
| Angle between velocity vectors | 62° |
| Geographic position | 11.5°S, 153.9°W |
| Height | 688 km |
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