| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | CZ-4 R/B DEB |
| Spacetrack catalog number | 15755 | 37615 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Mar 19 20:23 | 2023 Mar 18 17:09 |
| Time of closest approach (UTC) | 2023 Feb 02 19:06:17.228 |
| Minimum distance | 516.305 km |
| Height difference | 5.142 km |
| Relative speed | 7.022 km/s |
| Angle between velocity vectors | 56° |
| Geographic position | 61.1°N, 31.3°W |
| Height | 811 km |
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