| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | Meteor 1-12 Rocket |
| Spacetrack catalog number | 15333 | 6080 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2026 Jan 13 09:55 | 2026 Jan 13 15:38 |
| Time of closest approach (UTC) | 2025 Dec 15 21:55:00.373 |
| Minimum distance | 12.950 km |
| Height difference | 2.158 km |
| Relative speed | 14.416 km/s |
| Angle between velocity vectors | 152° |
| Geographic position | 6.4°S, 16.1°E |
| Height | 860 km |
|