| Primary satellite | Secondary satellite |
| Name | Cosmos 1666 Rocket | CZ-6A DEB |
| Spacetrack catalog number | 15890 | 55214 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 16:44 | 2024 Dec 22 00:23 |
| Time of closest approach (UTC) | 2024 Dec 26 03:33:18.345 |
| Minimum distance | 2.502 km |
| Height difference | -2.481 km |
| Relative speed | 15.146 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 75.7°N, 89.2°E |
| Height | 621 km |
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