| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | COSMOS 1275 DEB |
| Spacetrack catalog number | 7714 | 27735 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 04:48 | 2024 Dec 23 00:22 |
| Time of closest approach (UTC) | 2024 Dec 25 12:32:44.560 |
| Minimum distance | 4.812 km |
| Height difference | 2.678 km |
| Relative speed | 13.823 km/s |
| Angle between velocity vectors | 138° |
| Geographic position | 67.7°S, 45.5°W |
| Height | 912 km |
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