| Primary satellite | Secondary satellite |
| Name | Intercosmos 25 | FENGYUN 1C DEB |
| Spacetrack catalog number | 21819 | 30358 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Jan 15 22:33 | 2021 Jan 15 20:58 |
| Time of closest approach (UTC) | 2020 Nov 29 20:13:35.131 |
| Minimum distance | 3.720 km |
| Height difference | -2.949 km |
| Relative speed | 15.142 km/s |
| Angle between velocity vectors | 173° |
| Geographic position | 42.6°S, 158.5°W |
| Height | 885 km |
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