| Primary satellite | Secondary satellite |
| Name | deb Delta 139 | COSMOS 1275 DEB |
| Spacetrack catalog number | 13561 | 42149 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 12:50 | 2024 Dec 17 20:45 |
| Time of closest approach (UTC) | 2024 Dec 26 13:36:01.955 |
| Minimum distance | 4.478 km |
| Height difference | 4.032 km |
| Relative speed | 14.680 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 78.7°S, 42.9°W |
| Height | 901 km |
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