| Primary satellite | Secondary satellite |
| Name | Cosmos 1356 | CZ-2D DEB |
| Spacetrack catalog number | 13153 | 43149 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Apr 13 03:26 | 2021 Apr 13 04:26 |
| Time of closest approach (UTC) | 2021 Mar 06 06:56:26.167 |
| Minimum distance | 99.040 km |
| Height difference | -0.552 km |
| Relative speed | 15.175 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 77.1°S, 87.8°E |
| Height | 471 km |
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