| Primary satellite | Secondary satellite |
| Name | Transit 2A Rocket | Cosmos 1140 |
| Spacetrack catalog number | 47 | 11573 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2023 Dec 01 11:03 | 2023 Dec 01 09:34 |
| Time of closest approach (UTC) | 2023 Sep 27 13:40:40.198 |
| Minimum distance | 507.305 km |
| Height difference | 6.734 km |
| Relative speed | 10.910 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 58.3°S, 154.6°W |
| Height | 794 km |
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