| Primary satellite | Secondary satellite |
| Name | NOAA 12 | OPS 4078 |
| Spacetrack catalog number | 21263 | 3510 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 11 14:33 | 2021 Apr 11 06:43 |
| Time of closest approach (UTC) | 2021 Mar 04 09:01:38.694 |
| Minimum distance | 2.188 km |
| Height difference | -1.696 km |
| Relative speed | 14.283 km/s |
| Angle between velocity vectors | 147° |
| Geographic position | 58.8°N, 119.8°E |
| Height | 824 km |
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