| Primary satellite | Secondary satellite |
| Name | COSMOS 1275 DEB | Sep Motor Cover |
| Spacetrack catalog number | 27733 | 20629 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 03:24 | 2024 Dec 22 19:38 |
| Time of closest approach (UTC) | 2024 Dec 28 22:21:37.638 |
| Minimum distance | 1.213 km |
| Height difference | 0.786 km |
| Relative speed | 11.890 km/s |
| Angle between velocity vectors | 106° |
| Geographic position | 67.2°N, 176.4°W |
| Height | 851 km |
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