| Primary satellite | Secondary satellite |
| Name | SL-8 R/B | deb Kosmos-1275 |
| Spacetrack catalog number | 36520 | 15542 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 05:12 | 2024 Dec 23 08:25 |
| Time of closest approach (UTC) | 2024 Dec 27 12:53:04.038 |
| Minimum distance | 4.648 km |
| Height difference | -3.654 km |
| Relative speed | 14.565 km/s |
| Angle between velocity vectors | 164° |
| Geographic position | 30.4°S, 169.3°E |
| Height | 989 km |
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