| Primary satellite | Secondary satellite |
| Name | ESTCUBE 1 | FENGYUN 1C DEB |
| Spacetrack catalog number | 39161 | 36169 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2021 Feb 28 05:06 | 2021 Feb 27 19:27 |
| Time of closest approach (UTC) | 2021 Jan 20 06:55:51.402 |
| Minimum distance | 179.885 km |
| Height difference | -1.301 km |
| Relative speed | 12.608 km/s |
| Angle between velocity vectors | 114° |
| Geographic position | 76.4°N, 154.0°W |
| Height | 674 km |
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