| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | CZ-4B DEB |
| Spacetrack catalog number | 15755 | 29215 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 20:23 | 2023 Mar 20 01:47 |
| Time of closest approach (UTC) | 2023 Jan 31 15:47:36.403 |
| Minimum distance | 38.117 km |
| Height difference | -3.787 km |
| Relative speed | 14.672 km/s |
| Angle between velocity vectors | 159° |
| Geographic position | 57.4°S, 45.2°W |
| Height | 868 km |
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