| Primary satellite | Secondary satellite |
| Name | Cosmos 1308 Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 12836 | 12753 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 18:00 | 2025 Nov 16 15:51 |
| Time of closest approach (UTC) | 2025 Oct 18 17:39:17.019 |
| Minimum distance | 26.777 km |
| Height difference | 2.751 km |
| Relative speed | 3.021 km/s |
| Angle between velocity vectors | 24° |
| Geographic position | 82.7°N, 111.6°E |
| Height | 1000 km |
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