| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 15890 | 31810 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 Jul 03 11:57 | 2022 Jul 03 07:17 |
| Time of closest approach (UTC) | 2022 May 28 18:25:52.742 |
| Minimum distance | 18.366 km |
| Height difference | -1.477 km |
| Relative speed | 15.179 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 79.2°N, 109.7°W |
| Height | 624 km |
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