| Primary satellite | Secondary satellite |
| Name | Cosmos 1602 Rocket | DNEPR OBJECT J |
| Spacetrack catalog number | 15332 | 39424 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 14:44 | 2026 Jan 13 05:53 |
| Time of closest approach (UTC) | 2025 Dec 18 21:38:39.463 |
| Minimum distance | 226.620 km |
| Height difference | -2.481 km |
| Relative speed | 13.098 km/s |
| Angle between velocity vectors | 120° |
| Geographic position | 82.0°N, 177.5°E |
| Height | 629 km |
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