| Primary satellite | Secondary satellite |
| Name | Vanguard 1 Rocket | ALSAT 2B |
| Spacetrack catalog number | 16 | 41786 |
| Radar cross section | medium | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 22 13:13 | 2024 Dec 22 20:18 |
| Time of closest approach (UTC) | 2024 Dec 25 23:28:59.566 |
| Minimum distance | 3.084 km |
| Height difference | 3.067 km |
| Relative speed | 8.357 km/s |
| Angle between velocity vectors | 64° |
| Geographic position | 0.5°S, 26.4°W |
| Height | 663 km |
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