| Primary satellite | Secondary satellite |
| Name | Kosmos-2154 | Cosmos 2123 Rocket |
| Spacetrack catalog number | 21666 | 21090 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Sep 22 04:28 | 2023 Sep 22 06:40 |
| Time of closest approach (UTC) | 2023 Jun 09 04:37:47.909 |
| Minimum distance | 34.894 km |
| Height difference | 1.365 km |
| Relative speed | 14.327 km/s |
| Angle between velocity vectors | 153° |
| Geographic position | 59.3°N, 105.5°W |
| Height | 979 km |
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