| Primary satellite | Secondary satellite |
| Name | Cosmos 1538 Rocket | Cosmos 923 Rocket |
| Spacetrack catalog number | 14760 | 10121 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 11:37 | 2024 Dec 22 20:36 |
| Time of closest approach (UTC) | 2024 Dec 25 05:49:47.214 |
| Minimum distance | 3.966 km |
| Height difference | 3.327 km |
| Relative speed | 1.301 km/s |
| Angle between velocity vectors | 10° |
| Geographic position | 74.1°N, 32.5°E |
| Height | 775 km |
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