| Primary satellite | Secondary satellite |
| Name | Cosmos 1603 | PAYLOAD A |
| Spacetrack catalog number | 15333 | 27840 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Sep 16 13:05 | 2024 Sep 16 12:20 |
| Time of closest approach (UTC) | 2024 Aug 15 02:52:25.253 |
| Minimum distance | 2.212 km |
| Height difference | -1.597 km |
| Relative speed | 14.779 km/s |
| Angle between velocity vectors | 169° |
| Geographic position | 7.3°S, 170.6°W |
| Height | 835 km |
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