| Primary satellite | Secondary satellite |
| Name | GP-B | GEESAT 3-08 |
| Spacetrack catalog number | 28230 | 61018 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2026 Jan 24 02:51 | 2026 Jan 24 03:27 |
| Time of closest approach (UTC) | 2025 Dec 17 06:11:10.180 |
| Minimum distance | 208.539 km |
| Height difference | 1.079 km |
| Relative speed | 13.817 km/s |
| Angle between velocity vectors | 133° |
| Geographic position | 30.9°S, 125.3°W |
| Height | 633 km |
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