| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | CZ-6A DEB |
| Spacetrack catalog number | 15333 | 54971 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 May 14 10:24 | 2025 May 14 12:29 |
| Time of closest approach (UTC) | 2025 May 01 03:48:46.469 |
| Minimum distance | 7.662 km |
| Height difference | -5.227 km |
| Relative speed | 9.199 km/s |
| Angle between velocity vectors | 76° |
| Geographic position | 66.3°N, 43.4°E |
| Height | 847 km |
|