| Primary satellite | Secondary satellite |
| Name | Cosmos 1308 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 12836 | 31480 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 18:00 | 2025 Nov 16 13:31 |
| Time of closest approach (UTC) | 2025 Oct 15 06:45:40.888 |
| Minimum distance | 18.452 km |
| Height difference | 12.459 km |
| Relative speed | 14.654 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 76.8°S, 57.7°E |
| Height | 997 km |
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