| Primary satellite | Secondary satellite |
| Name | ADEOS II | COSMOS 2251 DEB |
| Spacetrack catalog number | 27597 | 36055 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Sep 08 14:28 | 2024 Sep 08 13:00 |
| Time of closest approach (UTC) | 2024 Aug 16 10:39:57.265 |
| Minimum distance | 107.269 km |
| Height difference | 2.772 km |
| Relative speed | 14.817 km/s |
| Angle between velocity vectors | 170° |
| Geographic position | 45.8°N, 120.4°W |
| Height | 803 km |
|