| Primary satellite | Secondary satellite |
| Name | Cosmos 1782 | GHGSAT-C3 |
| Spacetrack catalog number | 16986 | 52737 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2025 Nov 16 11:35 | 2025 Nov 16 19:14 |
| Time of closest approach (UTC) | 2025 Oct 19 02:42:33.696 |
| Minimum distance | 79.177 km |
| Height difference | 4.904 km |
| Relative speed | 5.987 km/s |
| Angle between velocity vectors | 46° |
| Geographic position | 70.2°N, 26.1°W |
| Height | 489 km |
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