| Primary satellite | Secondary satellite |
| Name | Cosmos 1151 Rocket | SORCE |
| Spacetrack catalog number | 11672 | 27651 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Apr 17 05:09 | 2021 Apr 17 08:51 |
| Time of closest approach (UTC) | 2021 Mar 03 07:43:03.797 |
| Minimum distance | 10.999 km |
| Height difference | -5.913 km |
| Relative speed | 9.921 km/s |
| Angle between velocity vectors | 82° |
| Geographic position | 40.1°N, 136.7°E |
| Height | 598 km |
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