| Primary satellite | Secondary satellite |
| Name | DELTA 1 DEB | Kosmos-1635 |
| Spacetrack catalog number | 39095 | 15617 |
| Radar cross section | small | medium |
| Epoch of two-line elements (UTC) | 2024 Dec 19 17:34 | 2024 Dec 23 03:37 |
| Time of closest approach (UTC) | 2024 Dec 29 08:10:33.246 |
| Minimum distance | 3.922 km |
| Height difference | 0.179 km |
| Relative speed | 12.912 km/s |
| Angle between velocity vectors | 130° |
| Geographic position | 73.9°N, 96.0°E |
| Height | 1522 km |
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