| Primary satellite | Secondary satellite |
| Name | Cosmos 494 Rocket | FENGYUN 1C DEB |
| Spacetrack catalog number | 6061 | 30287 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 17 20:26 | 2021 Jan 17 19:31 |
| Time of closest approach (UTC) | 2020 Dec 03 13:39:49.767 |
| Minimum distance | 5.160 km |
| Height difference | 2.390 km |
| Relative speed | 15.010 km/s |
| Angle between velocity vectors | 172° |
| Geographic position | 26.2°S, 77.0°E |
| Height | 778 km |
|