| Primary satellite | Secondary satellite |
| Name | FO-29 | deb Kosmos-1275 |
| Spacetrack catalog number | 24278 | 12712 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2021 Feb 27 19:00 | 2021 Feb 27 18:07 |
| Time of closest approach (UTC) | 2021 Jan 23 21:48:04.303 |
| Minimum distance | 15.425 km |
| Height difference | -3.352 km |
| Relative speed | 12.561 km/s |
| Angle between velocity vectors | 117° |
| Geographic position | 80.7°N, 46.5°W |
| Height | 1010 km |
|