| Primary satellite | Secondary satellite |
| Name | Kosmos-1636 | DELTA 1 DEB |
| Spacetrack catalog number | 15618 | 42574 |
| Radar cross section | medium | small |
| Epoch of two-line elements (UTC) | 2024 Dec 23 10:19 | 2024 Dec 20 16:28 |
| Time of closest approach (UTC) | 2024 Dec 29 08:05:31.621 |
| Minimum distance | 4.030 km |
| Height difference | 1.045 km |
| Relative speed | 14.215 km/s |
| Angle between velocity vectors | 175° |
| Geographic position | 35.9°S, 135.1°E |
| Height | 1495 km |
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