| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | CZ-6A DEB |
| Spacetrack catalog number | 15333 | 54552 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 May 14 10:24 | 2025 May 15 05:56 |
| Time of closest approach (UTC) | 2025 Apr 28 07:55:22.072 |
| Minimum distance | 4.381 km |
| Height difference | 1.870 km |
| Relative speed | 9.137 km/s |
| Angle between velocity vectors | 76° |
| Geographic position | 66.2°N, 9.2°W |
| Height | 848 km |
|