| Primary satellite | Secondary satellite |
| Name | Tiros 1 | Cosmos 1328 Rocket |
| Spacetrack catalog number | 29 | 12988 |
| Radar cross section | medium | large |
| Epoch of two-line elements (UTC) | 2021 Apr 13 00:15 | 2021 Apr 13 05:20 |
| Time of closest approach (UTC) | 2021 Mar 07 03:05:09.156 |
| Minimum distance | 4.462 km |
| Height difference | -2.156 km |
| Relative speed | 10.152 km/s |
| Angle between velocity vectors | 85° |
| Geographic position | 48.3°S, 144.5°W |
| Height | 646 km |
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