| Primary satellite | Secondary satellite |
| Name | Cosmos 1151 Rocket | COMPASS 1 |
| Spacetrack catalog number | 11672 | 32787 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 11 20:02 | 2021 Apr 11 23:00 |
| Time of closest approach (UTC) | 2021 Mar 04 15:52:41.320 |
| Minimum distance | 1.694 km |
| Height difference | 0.170 km |
| Relative speed | 15.128 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 65.6°N, 1.3°E |
| Height | 605 km |
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