| Primary satellite | Secondary satellite |
| Name | Cosmos 1308 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 12836 | 30178 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 18:00 | 2025 Nov 16 05:15 |
| Time of closest approach (UTC) | 2025 Oct 17 15:02:27.526 |
| Minimum distance | 5.781 km |
| Height difference | 3.359 km |
| Relative speed | 14.762 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 5.0°S, 77.1°E |
| Height | 966 km |
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