| Primary satellite | Secondary satellite |
| Name | Vanguard 3 | FENGYUN 1C DEB |
| Spacetrack catalog number | 20 | 36652 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Mar 26 21:29 | 2023 Mar 26 03:07 |
| Time of closest approach (UTC) | 2023 Feb 01 18:57:24.415 |
| Minimum distance | 1020.520 km |
| Height difference | -85.130 km |
| Relative speed | 11.516 km/s |
| Angle between velocity vectors | 99° |
| Geographic position | 33.1°S, 153.2°W |
| Height | 985 km |
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