| 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 18:30:28.115 |
| Minimum distance | 5.122 km |
| Height difference | 3.561 km |
| Relative speed | 15.181 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 48.4°S, 4.9°W |
| Height | 537 km |
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