| Primary satellite | Secondary satellite |
| Name | Vanguard 1 Rocket | IRIDIUM 33 DEB |
| Spacetrack catalog number | 16 | 34376 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Sep 15 14:33 | 2024 Sep 15 02:05 |
| Time of closest approach (UTC) | 2024 Aug 06 22:50:10.393 |
| Minimum distance | 1276.495 km |
| Height difference | 43.676 km |
| Relative speed | 12.298 km/s |
| Angle between velocity vectors | 102° |
| Geographic position | 28.6°N, 61.9°W |
| Height | 667 km |
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