| Primary satellite | Secondary satellite |
| Name | COSMOS 1275 DEB | DMSP B5D2-3 |
| Spacetrack catalog number | 27733 | 18123 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 03:24 | 2024 Dec 23 03:12 |
| Time of closest approach (UTC) | 2024 Dec 25 16:36:02.628 |
| Minimum distance | 4.044 km |
| Height difference | 3.944 km |
| Relative speed | 7.573 km/s |
| Angle between velocity vectors | 61° |
| Geographic position | 74.6°N, 53.3°E |
| Height | 844 km |
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