| Primary satellite | Secondary satellite |
| Name | CZ-2D DEB | Cosmos 1666 Rocket |
| Spacetrack catalog number | 44609 | 15890 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:48 | 2024 Dec 23 02:26 |
| Time of closest approach (UTC) | 2024 Dec 26 05:01:47.100 |
| Minimum distance | 3.513 km |
| Height difference | 2.285 km |
| Relative speed | 15.089 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 45.6°N, 43.8°E |
| Height | 621 km |
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