| Primary satellite | Secondary satellite |
| Name | PDD Test Mass | Iridium 5 |
| Spacetrack catalog number | 20564 | 24795 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 18:27 | 2024 Dec 23 01:13 |
| Time of closest approach (UTC) | 2024 Dec 26 09:19:52.761 |
| Minimum distance | 3.285 km |
| Height difference | -3.220 km |
| Relative speed | 12.377 km/s |
| Angle between velocity vectors | 111° |
| Geographic position | 86.1°S, 138.6°W |
| Height | 672 km |
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