| Primary satellite | Secondary satellite |
| Name | Cosmos 921 Rocket | deb Explorer XIX |
| Spacetrack catalog number | 10096 | 732 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Nov 17 20:26 | 2025 Nov 17 12:01 |
| Time of closest approach (UTC) | 2025 Oct 19 05:49:19.519 |
| Minimum distance | 365.541 km |
| Height difference | 21.951 km |
| Relative speed | 14.797 km/s |
| Angle between velocity vectors | 154° |
| Geographic position | 5.7°S, 49.1°E |
| Height | 626 km |
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