| Primary satellite | Secondary satellite |
| Name | Cosmos 1538 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 14760 | 33639 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:37 | 2024 Dec 17 23:06 |
| Time of closest approach (UTC) | 2024 Dec 28 05:01:07.183 |
| Minimum distance | 6.234 km |
| Height difference | -0.559 km |
| Relative speed | 4.960 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 49.9°S, 78.6°W |
| Height | 781 km |
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