| Primary satellite | Secondary satellite |
| Name | SAR-Lupe-4 | N. Korean satellite |
| Spacetrack catalog number | 32750 | 39026 |
| Radar cross section | | medium |
| Epoch of two-line elements (UTC) | 2021 Mar 26 18:58 | 2021 Apr 17 01:49 |
| Time of closest approach (UTC) | 2021 Mar 09 13:45:16.600 |
| Minimum distance | 49.923 km |
| Height difference | 2.525 km |
| Relative speed | 14.841 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 53.4°N, 119.4°W |
| Height | 490 km |
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