| Primary satellite | Secondary satellite |
| Name | Cosmos 1745 Rocket | Kosmos-1089 |
| Spacetrack catalog number | 16728 | 11308 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Mar 07 19:36 | 2021 Mar 07 11:51 |
| Time of closest approach (UTC) | 2021 Jan 26 17:54:44.099 |
| Minimum distance | 11.603 km |
| Height difference | -2.227 km |
| Relative speed | 10.064 km/s |
| Angle between velocity vectors | 87° |
| Geographic position | 80.4°S, 2.5°W |
| Height | 1025 km |
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