| Primary satellite | Secondary satellite |
| Name | SJ-9B | Cosmos 1408 Rocket |
| Spacetrack catalog number | 38861 | 13553 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:38 | 2024 Dec 22 14:49 |
| Time of closest approach (UTC) | 2024 Dec 25 18:06:55.695 |
| Minimum distance | 1.111 km |
| Height difference | 0.371 km |
| Relative speed | 14.955 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 82.5°S, 83.7°E |
| Height | 630 km |
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