| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | deb Kosmos-1275 |
| Spacetrack catalog number | 7714 | 12700 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 04:29 | 2021 Jan 17 10:16 |
| Time of closest approach (UTC) | 2020 Dec 06 00:39:02.966 |
| Minimum distance | 32.312 km |
| Height difference | 2.109 km |
| Relative speed | 0.712 km/s |
| Angle between velocity vectors | 5° |
| Geographic position | 71.5°S, 159.5°E |
| Height | 874 km |
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