| Primary satellite | Secondary satellite |
| Name | CZ-6A DEB | Cosmos 1666 Rocket |
| Spacetrack catalog number | 55214 | 15890 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 01:04 | 2024 Dec 23 02:26 |
| Time of closest approach (UTC) | 2024 Dec 26 03:33:18.081 |
| Minimum distance | 2.499 km |
| Height difference | 2.473 km |
| Relative speed | 15.146 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 75.7°N, 89.2°E |
| Height | 619 km |
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