| Primary satellite | Secondary satellite |
| Name | Cosmos 1812 | KAIDUN 1 |
| Spacetrack catalog number | 17295 | 41915 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 16 11:17 | 2024 Sep 16 13:41 |
| Time of closest approach (UTC) | 2024 Aug 15 16:08:04.066 |
| Minimum distance | 27.886 km |
| Height difference | 1.196 km |
| Relative speed | 15.270 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 68.4°N, 30.4°E |
| Height | 475 km |
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