| Primary satellite | Secondary satellite |
| Name | GP-B | PROITERES |
| Spacetrack catalog number | 28230 | 38756 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 04 20:28 | 2024 Dec 04 20:43 |
| Time of closest approach (UTC) | 2024 Nov 16 00:34:42.482 |
| Minimum distance | 16.735 km |
| Height difference | -4.703 km |
| Relative speed | 14.663 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 72.1°N, 1.9°W |
| Height | 637 km |
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