| Primary satellite | Secondary satellite |
| Name | Cosmos 1356 Rocket | OBJECT B |
| Spacetrack catalog number | 13154 | 43832 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Feb 27 21:26 | 2021 Feb 27 20:47 |
| Time of closest approach (UTC) | 2021 Jan 25 21:35:27.246 |
| Minimum distance | 177.390 km |
| Height difference | -1.245 km |
| Relative speed | 9.419 km/s |
| Angle between velocity vectors | 77° |
| Geographic position | 77.5°S, 47.7°E |
| Height | 576 km |
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