| Primary satellite | Secondary satellite |
| Name | Kosmos-1308 | Kosmos-911 |
| Spacetrack catalog number | 12835 | 10019 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 23 03:25 | 2024 Dec 22 23:53 |
| Time of closest approach (UTC) | 2024 Dec 29 15:32:11.114 |
| Minimum distance | 1.849 km |
| Height difference | 0.478 km |
| Relative speed | 4.920 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 82.5°S, 131.2°E |
| Height | 1019 km |
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