| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 30719 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 20:23 | 2023 Mar 19 18:11 |
| Time of closest approach (UTC) | 2023 Feb 02 22:40:05.617 |
| Minimum distance | 842.888 km |
| Height difference | -3.576 km |
| Relative speed | 13.941 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 65.0°N, 10.0°E |
| Height | 810 km |
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