| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 31660 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 28 13:56 | 2023 Mar 26 18:59 |
| Time of closest approach (UTC) | 2023 Feb 01 03:24:25.611 |
| Minimum distance | 535.864 km |
| Height difference | -1.552 km |
| Relative speed | 8.137 km/s |
| Angle between velocity vectors | 67° |
| Geographic position | 65.5°S, 39.6°E |
| Height | 871 km |
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