| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15755 | 37014 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Oct 01 21:13 | 2023 Oct 01 16:51 |
| Time of closest approach (UTC) | 2023 Jun 16 03:06:22.057 |
| Minimum distance | 1162.710 km |
| Height difference | 40.004 km |
| Relative speed | 14.846 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 64.8°S, 15.5°W |
| Height | 824 km |
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