| Primary satellite | Secondary satellite |
| Name | Cosmos 2151 Rocket | GAOFEN DUOMO (GFDM) |
| Spacetrack catalog number | 21423 | 45856 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 19 16:56 | 2021 Jan 19 19:30 |
| Time of closest approach (UTC) | 2020 Nov 30 07:33:13.094 |
| Minimum distance | 3.079 km |
| Height difference | 3.012 km |
| Relative speed | 15.018 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 80.7°S, 14.1°W |
| Height | 669 km |
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