| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | deb Kosmos-1275 |
| Spacetrack catalog number | 13561 | 12773 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 22 21:20 |
| Time of closest approach (UTC) | 2024 Dec 24 05:19:23.025 |
| Minimum distance | 1.760 km |
| Height difference | -1.192 km |
| Relative speed | 14.699 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 80.7°N, 76.9°W |
| Height | 715 km |
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