| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 43213 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 20:23 | 2023 Mar 19 15:29 |
| Time of closest approach (UTC) | 2023 Feb 02 11:36:38.515 |
| Minimum distance | 608.371 km |
| Height difference | 0.654 km |
| Relative speed | 12.126 km/s |
| Angle between velocity vectors | 110° |
| Geographic position | 71.2°S, 41.8°W |
| Height | 874 km |
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