| Primary satellite | Secondary satellite |
| Name | Cosmos 1300 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 12786 | 35140 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 19 16:15 | 2021 Jan 19 14:19 |
| Time of closest approach (UTC) | 2020 Dec 05 21:53:43.448 |
| Minimum distance | 1.839 km |
| Height difference | 1.661 km |
| Relative speed | 15.077 km/s |
| Angle between velocity vectors | 167° |
| Geographic position | 80.9°S, 44.0°E |
| Height | 648 km |
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