| Primary satellite | Secondary satellite |
| Name | SJ-9B | Cosmos 1766 Rocket |
| Spacetrack catalog number | 38861 | 16882 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:38 | 2024 Dec 22 14:38 |
| Time of closest approach (UTC) | 2024 Dec 29 06:03:13.312 |
| Minimum distance | 4.586 km |
| Height difference | 4.556 km |
| Relative speed | 15.076 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 82.4°S, 92.7°W |
| Height | 632 km |
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