| Primary satellite | Secondary satellite |
| Name | Cosmos 2228 Rocket | TRAILBLAZER |
| Spacetrack catalog number | 22287 | 27609 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 14 09:58 | 2021 Apr 14 04:07 |
| Time of closest approach (UTC) | 2021 Mar 04 18:40:45.340 |
| Minimum distance | 7.680 km |
| Height difference | 4.343 km |
| Relative speed | 11.068 km/s |
| Angle between velocity vectors | 94° |
| Geographic position | 62.8°S, 6.5°E |
| Height | 644 km |
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