| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | Cosmos 2227 Rocket |
| Spacetrack catalog number | 15333 | 22285 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2026 Jan 13 09:55 | 2026 Jan 13 13:06 |
| Time of closest approach (UTC) | 2025 Dec 16 10:21:52.105 |
| Minimum distance | 92.317 km |
| Height difference | 2.341 km |
| Relative speed | 11.398 km/s |
| Angle between velocity vectors | 100° |
| Geographic position | 60.2°N, 26.6°W |
| Height | 846 km |
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