| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 15890 | 32459 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 Jul 03 11:57 | 2022 Jul 03 08:16 |
| Time of closest approach (UTC) | 2022 May 30 14:06:24.931 |
| Minimum distance | 5.315 km |
| Height difference | -2.528 km |
| Relative speed | 15.194 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 74.0°N, 64.5°W |
| Height | 624 km |
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