| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | deb Kosmos-1275 |
| Spacetrack catalog number | 47 | 17619 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 13:08 | 2021 Mar 07 15:21 |
| Time of closest approach (UTC) | 2021 Jan 27 09:53:34.497 |
| Minimum distance | 10.340 km |
| Height difference | 0.054 km |
| Relative speed | 11.885 km/s |
| Angle between velocity vectors | 106° |
| Geographic position | 62.4°S, 124.0°W |
| Height | 837 km |
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