| Primary satellite | Secondary satellite |
| Name | Cosmos 1536 | Tandem-X |
| Spacetrack catalog number | 14699 | 36605 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 00:31 | 2024 Dec 22 13:21 |
| Time of closest approach (UTC) | 2024 Dec 23 23:01:38.681 |
| Minimum distance | 3.411 km |
| Height difference | -1.513 km |
| Relative speed | 15.225 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 72.7°N, 129.7°E |
| Height | 521 km |
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