| Primary satellite | Secondary satellite |
| Name | OAO 1 | Cosmos 540 |
| Spacetrack catalog number | 2142 | 6323 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2024 Dec 22 14:56 | 2024 Dec 22 11:31 |
| Time of closest approach (UTC) | 2024 Dec 26 15:40:38.931 |
| Minimum distance | 4.051 km |
| Height difference | 3.985 km |
| Relative speed | 5.430 km/s |
| Angle between velocity vectors | 43° |
| Geographic position | 18.2°S, 29.9°E |
| Height | 778 km |
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