| Primary satellite | Secondary satellite |
| Name | GP-B | Cosmos 1766 Rocket |
| Spacetrack catalog number | 28230 | 16882 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Dec 06 06:56 | 2023 Dec 06 13:09 |
| Time of closest approach (UTC) | 2023 Oct 04 01:36:45.693 |
| Minimum distance | 37.934 km |
| Height difference | 1.137 km |
| Relative speed | 14.959 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 56.0°S, 33.8°E |
| Height | 649 km |
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