| Primary satellite | Secondary satellite |
| Name | STRAND 1 | deb Kosmos-1275 |
| Spacetrack catalog number | 39090 | 12723 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Mar 01 09:54 | 2021 Mar 01 21:01 |
| Time of closest approach (UTC) | 2021 Jan 18 03:36:17.531 |
| Minimum distance | 11.751 km |
| Height difference | -2.720 km |
| Relative speed | 14.906 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 68.4°S, 73.8°E |
| Height | 798 km |
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