| Primary satellite | Secondary satellite |
| Name | Vanguard 2 | FENGYUN 1C DEB |
| Spacetrack catalog number | 11 | 29919 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Mar 26 16:43 | 2023 Mar 26 21:27 |
| Time of closest approach (UTC) | 2023 Feb 10 11:57:17.949 |
| Minimum distance | 199.380 km |
| Height difference | -8.491 km |
| Relative speed | 11.658 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 33.0°S, 30.8°W |
| Height | 881 km |
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