| Primary satellite | Secondary satellite |
| Name | deb Delta 104 | ERS-1 |
| Spacetrack catalog number | 9988 | 21574 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 20:20 | 2024 Dec 23 00:38 |
| Time of closest approach (UTC) | 2024 Dec 24 13:58:20.766 |
| Minimum distance | 1.354 km |
| Height difference | 0.697 km |
| Relative speed | 14.507 km/s |
| Angle between velocity vectors | 149° |
| Geographic position | 44.8°N, 118.6°W |
| Height | 759 km |
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