| Primary satellite | Secondary satellite |
| Name | Lacrosse 4 Rocket | HODOYOSHI 4 |
| Spacetrack catalog number | 26474 | 40011 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 13 00:57 | 2021 Apr 13 20:52 |
| Time of closest approach (UTC) | 2021 Mar 02 14:31:19.702 |
| Minimum distance | 4.873 km |
| Height difference | 0.217 km |
| Relative speed | 14.016 km/s |
| Angle between velocity vectors | 137° |
| Geographic position | 64.9°N, 125.9°E |
| Height | 629 km |
|