| Primary satellite | Secondary satellite |
| Name | Vanguard 2 | AAUSAT 4 |
| Spacetrack catalog number | 11 | 41460 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Jan 16 04:12 | 2021 Jan 16 00:35 |
| Time of closest approach (UTC) | 2020 Nov 26 17:55:41.846 |
| Minimum distance | 724.920 km |
| Height difference | 30.954 km |
| Relative speed | 10.844 km/s |
| Angle between velocity vectors | 88° |
| Geographic position | 31.8°N, 61.3°W |
| Height | 593 km |
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