| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | FENGYUN 1C DEB |
| Spacetrack catalog number | 15333 | 30037 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 19 12:23 | 2024 Sep 19 19:36 |
| Time of closest approach (UTC) | 2024 Aug 13 03:34:29.989 |
| Minimum distance | 96.174 km |
| Height difference | 3.018 km |
| Relative speed | 14.652 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 52.3°S, 151.3°W |
| Height | 855 km |
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