| Primary satellite | Secondary satellite |
| Name | ALOS | COSMOS 2251 DEB |
| Spacetrack catalog number | 28931 | 35288 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 14 08:14 | 2024 Dec 11 07:04 |
| Time of closest approach (UTC) | 2024 Nov 04 03:17:18.637 |
| Minimum distance | 35.015 km |
| Height difference | -5.750 km |
| Relative speed | 15.004 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 38.8°N, 7.3°W |
| Height | 674 km |
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