| Primary satellite | Secondary satellite |
| Name | Cosmos 1538 Rocket | Star 20 E-46? |
| Spacetrack catalog number | 14760 | 21528 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2022 May 25 21:20 | 2022 May 25 13:39 |
| Time of closest approach (UTC) | 2022 Jan 26 15:11:50.361 |
| Minimum distance | 314.025 km |
| Height difference | 3.766 km |
| Relative speed | 9.035 km/s |
| Angle between velocity vectors | 74° |
| Geographic position | 73.1°N, 12.6°W |
| Height | 764 km |
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