| Primary satellite | Secondary satellite |
| Name | DELTA 1 DEB | COSMOS 1818 COOLANT |
| Spacetrack catalog number | 37651 | 50787 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2025 Nov 14 12:59 | 2025 Nov 15 13:42 |
| Time of closest approach (UTC) | 2025 Oct 17 07:51:15.162 |
| Minimum distance | 153.181 km |
| Height difference | -1.440 km |
| Relative speed | 12.886 km/s |
| Angle between velocity vectors | 119° |
| Geographic position | 63.8°N, 84.5°E |
| Height | 781 km |
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