| Primary satellite | Secondary satellite |
| Name | Cosmos 1408 Rocket | SJ-9B |
| Spacetrack catalog number | 13553 | 38861 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:49 | 2024 Dec 22 14:39 |
| Time of closest approach (UTC) | 2024 Dec 25 18:06:56.003 |
| Minimum distance | 0.559 km |
| Height difference | -0.365 km |
| Relative speed | 14.955 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 82.5°S, 83.9°E |
| Height | 630 km |
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