| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 31424 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 20 13:16 | 2023 Mar 19 12:27 |
| Time of closest approach (UTC) | 2023 Feb 03 01:09:11.599 |
| Minimum distance | 45.917 km |
| Height difference | -6.045 km |
| Relative speed | 13.651 km/s |
| Angle between velocity vectors | 134° |
| Geographic position | 70.3°S, 126.8°E |
| Height | 874 km |
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