| Primary satellite | Secondary satellite |
| Name | GP-B | IRIDIUM 174 |
| Spacetrack catalog number | 28230 | 56728 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 04 20:28 | 2024 Dec 04 18:41 |
| Time of closest approach (UTC) | 2024 Nov 15 17:02:41.497 |
| Minimum distance | 34.039 km |
| Height difference | 9.121 km |
| Relative speed | 15.070 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 19.1°S, 69.0°W |
| Height | 629 km |
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