| Primary satellite | Secondary satellite |
| Name | Cosmos 1302 Rocket | deb Chang Zheng 4 |
| Spacetrack catalog number | 12792 | 20900 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2021 Mar 08 09:55 | 2021 Mar 08 17:20 |
| Time of closest approach (UTC) | 2021 Jan 24 07:50:30.101 |
| Minimum distance | 18.376 km |
| Height difference | -4.763 km |
| Relative speed | 14.804 km/s |
| Angle between velocity vectors | 166° |
| Geographic position | 56.6°S, 136.7°W |
| Height | 796 km |
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