| Primary satellite | Secondary satellite |
| Name | Cosmos 2251 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 22676 | 29933 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 25 11:02 | 2021 Jan 25 20:16 |
| Time of closest approach (UTC) | 2020 Nov 28 18:07:59.917 |
| Minimum distance | 47.355 km |
| Height difference | -0.080 km |
| Relative speed | 5.475 km/s |
| Angle between velocity vectors | 43° |
| Geographic position | 54.1°S, 33.0°E |
| Height | 812 km |
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