| Primary satellite | Secondary satellite |
| Name | SL-08 R/B | FENGYUN 1C DEB |
| Spacetrack catalog number | 27819 | 30279 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 22 10:35 | 2021 Apr 22 12:34 |
| Time of closest approach (UTC) | 2021 Mar 06 17:59:32.140 |
| Minimum distance | 7.918 km |
| Height difference | -3.855 km |
| Relative speed | 14.595 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 14.0°N, 27.6°E |
| Height | 1012 km |
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