| Primary satellite | Secondary satellite |
| Name | Vanguard 3 | FENGYUN 1C DEB |
| Spacetrack catalog number | 20 | 31919 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Mar 26 21:29 | 2023 Mar 25 22:23 |
| Time of closest approach (UTC) | 2023 Jan 30 23:23:52.234 |
| Minimum distance | 1272.152 km |
| Height difference | -99.516 km |
| Relative speed | 11.252 km/s |
| Angle between velocity vectors | 96° |
| Geographic position | 32.2°S, 140.3°E |
| Height | 942 km |
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