| Primary satellite | Secondary satellite |
| Name | NOAA 19 | Cosmos 1603 Rocket4 |
| Spacetrack catalog number | 33591 | 15334 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2025 Jan 18 21:33 | 2025 Jan 18 21:29 |
| Time of closest approach (UTC) | 2024 Dec 09 23:53:58.842 |
| Minimum distance | 90.258 km |
| Height difference | 1.091 km |
| Relative speed | 4.508 km/s |
| Angle between velocity vectors | 35° |
| Geographic position | 36.6°N, 151.5°E |
| Height | 843 km |
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