| Primary satellite | Secondary satellite |
| Name | Courier 1B | deb Navy Navigation Sat |
| Spacetrack catalog number | 58 | 18562 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Feb 25 11:57 | 2021 Feb 25 06:20 |
| Time of closest approach (UTC) | 2021 Feb 01 23:41:08.933 |
| Minimum distance | 3.316 km |
| Height difference | 1.495 km |
| Relative speed | 12.184 km/s |
| Angle between velocity vectors | 116° |
| Geographic position | 12.8°S, 142.3°W |
| Height | 1204 km |
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