| Primary satellite | Secondary satellite |
| Name | Cosmos 1605 Rocket | NIMBUS 2 DEB |
| Spacetrack catalog number | 15360 | 28615 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Jun 16 01:23 | 2025 Jun 15 03:21 |
| Time of closest approach (UTC) | 2025 May 17 09:35:47.078 |
| Minimum distance | 17.317 km |
| Height difference | -7.691 km |
| Relative speed | 14.703 km/s |
| Angle between velocity vectors | 174° |
| Geographic position | 56.4°S, 29.8°E |
| Height | 981 km |
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