| Primary satellite | Secondary satellite |
| Name | Cosmos 1812 | KAITUO 1A |
| Spacetrack catalog number | 17295 | 40904 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 15 20:27 | 2021 Apr 15 20:31 |
| Time of closest approach (UTC) | 2021 Mar 05 17:42:59.866 |
| Minimum distance | 4.607 km |
| Height difference | -4.371 km |
| Relative speed | 15.214 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 48.3°N, 173.0°W |
| Height | 526 km |
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