| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1503 |
| Spacetrack catalog number | 38725 | 14401 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 21 06:26 | 2024 Dec 23 03:27 |
| Time of closest approach (UTC) | 2024 Dec 27 15:04:56.180 |
| Minimum distance | 3.309 km |
| Height difference | -2.890 km |
| Relative speed | 11.317 km/s |
| Angle between velocity vectors | 99° |
| Geographic position | 72.8°N, 117.3°E |
| Height | 808 km |
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