| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | Cosmos 1023 |
| Spacetrack catalog number | 31914 | 10961 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 23:38 | 2024 Dec 22 11:06 |
| Time of closest approach (UTC) | 2024 Dec 26 18:08:41.445 |
| Minimum distance | 4.467 km |
| Height difference | -1.253 km |
| Relative speed | 14.758 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 61.7°S, 161.2°W |
| Height | 783 km |
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