| Primary satellite | Secondary satellite |
| Name | Cosmos 1140 Rocket | deb Chang Zheng 4 |
| Spacetrack catalog number | 11574 | 20887 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2023 Sep 28 13:40 | 2023 Sep 28 14:43 |
| Time of closest approach (UTC) | 2023 Jun 12 04:26:42.105 |
| Minimum distance | 2290.536 km |
| Height difference | 1.356 km |
| Relative speed | 5.010 km/s |
| Angle between velocity vectors | 39° |
| Geographic position | 35.1°S, 7.6°E |
| Height | 756 km |
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