| Primary satellite | Secondary satellite |
| Name | Cosmos 1140 Rocket | DMSP B5D2-5 |
| Spacetrack catalog number | 11574 | 20978 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Sep 22 04:25 | 2023 Sep 21 19:52 |
| Time of closest approach (UTC) | 2023 Jun 10 05:06:00.553 |
| Minimum distance | 538.672 km |
| Height difference | 2.278 km |
| Relative speed | 6.312 km/s |
| Angle between velocity vectors | 50° |
| Geographic position | 57.4°N, 161.8°W |
| Height | 774 km |
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