| Primary satellite | Secondary satellite |
| Name | Cosmos 2151 | STSAT 3 |
| Spacetrack catalog number | 21422 | 39422 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2023 Feb 06 20:17 | 2023 Feb 07 03:14 |
| Time of closest approach (UTC) | 2022 Nov 29 21:39:52.413 |
| Minimum distance | 1.722 km |
| Height difference | -1.290 km |
| Relative speed | 15.153 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 79.9°N, 163.6°E |
| Height | 594 km |
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