| Primary satellite | Secondary satellite |
| Name | Vanguard 2 | FENGYUN 1C DEB |
| Spacetrack catalog number | 11 | 31848 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 14 03:42 | 2024 Dec 14 04:08 |
| Time of closest approach (UTC) | 2024 Nov 14 06:07:23.940 |
| Minimum distance | 3265.312 km |
| Height difference | -86.529 km |
| Relative speed | 14.507 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 14.1°N, 5.1°W |
| Height | 646 km |
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