| Primary satellite | Secondary satellite |
| Name | FO-29 | deb Kosmos-1275 |
| Spacetrack catalog number | 24278 | 12731 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Feb 27 19:00 | 2021 Feb 27 21:30 |
| Time of closest approach (UTC) | 2021 Jan 21 21:54:03.159 |
| Minimum distance | 3.570 km |
| Height difference | 3.565 km |
| Relative speed | 14.179 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 81.4°N, 66.8°W |
| Height | 1019 km |
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