| Primary satellite | Secondary satellite |
| Name | Vanguard 1 Rocket | deb Delta 126 |
| Spacetrack catalog number | 16 | 12540 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2023 Sep 20 11:30 | 2023 Sep 20 11:32 |
| Time of closest approach (UTC) | 2022 Aug 12 10:30:42.239 |
| Minimum distance | 3713.898 km |
| Height difference | -409.930 km |
| Relative speed | 12.888 km/s |
| Angle between velocity vectors | 129° |
| Geographic position | 19.9°N, 42.6°W |
| Height | 1901 km |
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