| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15333 | 30705 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 19 08:59 | 2024 Sep 18 10:05 |
| Time of closest approach (UTC) | 2024 Aug 18 15:56:00.481 |
| Minimum distance | 95.993 km |
| Height difference | 5.027 km |
| Relative speed | 14.872 km/s |
| Angle between velocity vectors | 171° |
| Geographic position | 45.1°S, 0.1°E |
| Height | 852 km |
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