| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1089 Rocket |
| Spacetrack catalog number | 30634 | 11309 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 21:49 | 2024 Dec 23 10:18 |
| Time of closest approach (UTC) | 2024 Dec 27 03:12:34.611 |
| Minimum distance | 1.690 km |
| Height difference | -1.516 km |
| Relative speed | 14.688 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 2.1°S, 4.6°E |
| Height | 970 km |
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