| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | STARLINK-1278 |
| Spacetrack catalog number | 31877 | 45408 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 20 21:23 | 2024 Dec 23 12:18 |
| Time of closest approach (UTC) | 2024 Dec 25 12:38:59.193 |
| Minimum distance | 4.679 km |
| Height difference | 4.180 km |
| Relative speed | 7.032 km/s |
| Angle between velocity vectors | 55° |
| Geographic position | 31.1°N, 80.7°E |
| Height | 544 km |
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