| Primary satellite | Secondary satellite |
| Name | FO-29 | deb Kosmos-1275 |
| Spacetrack catalog number | 24278 | 12746 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Mar 07 11:34 | 2021 Mar 07 11:10 |
| Time of closest approach (UTC) | 2021 Jan 20 21:19:38.929 |
| Minimum distance | 7.878 km |
| Height difference | -2.124 km |
| Relative speed | 15.015 km/s |
| Angle between velocity vectors | 178° |
| Geographic position | 33.0°N, 146.5°W |
| Height | 827 km |
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