| Primary satellite | Secondary satellite |
| Name | Meteor 1-21 | COSMOS 1275 DEB |
| Spacetrack catalog number | 7714 | 42216 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 19 09:21 | 2020 Dec 26 11:37 |
| Time of closest approach (UTC) | 2020 Dec 09 13:57:33.729 |
| Minimum distance | 10.962 km |
| Height difference | 5.849 km |
| Relative speed | 11.337 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 77.7°S, 29.8°W |
| Height | 873 km |
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