| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 30167 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 20:23 | 2023 Mar 19 17:31 |
| Time of closest approach (UTC) | 2023 Feb 02 04:45:10.021 |
| Minimum distance | 1204.405 km |
| Height difference | -1.959 km |
| Relative speed | 7.174 km/s |
| Angle between velocity vectors | 58° |
| Geographic position | 63.4°S, 10.5°E |
| Height | 870 km |
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