| Primary satellite | Secondary satellite |
| Name | Oscar 19 | Cosmos 1850 Rocket |
| Spacetrack catalog number | 20442 | 18096 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2025 Jun 20 11:32 | 2025 Jun 20 11:16 |
| Time of closest approach (UTC) | 2025 May 18 21:12:27.634 |
| Minimum distance | 4.724 km |
| Height difference | 0.445 km |
| Relative speed | 14.784 km/s |
| Angle between velocity vectors | 165° |
| Geographic position | 59.4°S, 35.2°W |
| Height | 794 km |
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