| Primary satellite | Secondary satellite |
| Name | Cosmos 494 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 6061 | 32142 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:26 | 2021 Jan 15 12:51 |
| Time of closest approach (UTC) | 2020 Dec 02 13:08:41.147 |
| Minimum distance | 256.773 km |
| Height difference | 5.220 km |
| Relative speed | 8.879 km/s |
| Angle between velocity vectors | 73° |
| Geographic position | 69.3°N, 144.5°E |
| Height | 771 km |
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