| Primary satellite | Secondary satellite |
| Name | IRIDIUM 100 | COSMOS 1867 COOLANT |
| Spacetrack catalog number | 42956 | 39658 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 02:38 | 2024 Dec 22 20:56 |
| Time of closest approach (UTC) | 2024 Dec 26 16:05:54.649 |
| Minimum distance | 3.241 km |
| Height difference | 1.045 km |
| Relative speed | 14.439 km/s |
| Angle between velocity vectors | 151° |
| Geographic position | 13.9°N, 86.5°W |
| Height | 779 km |
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