| Primary satellite | Secondary satellite |
| Name | YAOGAN 29 DEB | Cosmos 1666 Rocket |
| Spacetrack catalog number | 42673 | 15890 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 22:09 | 2024 Dec 23 02:26 |
| Time of closest approach (UTC) | 2024 Dec 27 05:37:11.792 |
| Minimum distance | 1.601 km |
| Height difference | 1.243 km |
| Relative speed | 15.128 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 58.6°N, 167.1°W |
| Height | 609 km |
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