| Primary satellite | Secondary satellite |
| Name | Cosmos 1656 | NOAA 16 DEB |
| Spacetrack catalog number | 15755 | 41523 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 14:42 | 2021 Mar 08 12:05 |
| Time of closest approach (UTC) | 2021 Jan 26 20:10:09.815 |
| Minimum distance | 39.838 km |
| Height difference | 3.521 km |
| Relative speed | 3.573 km/s |
| Angle between velocity vectors | 28° |
| Geographic position | 5.8°N, 35.9°E |
| Height | 847 km |
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