| Primary satellite | Secondary satellite |
| Name | Cosmos 1328 Rocket | deb Delta 89 |
| Spacetrack catalog number | 12988 | 7846 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 13 05:20 | 2021 Apr 12 12:29 |
| Time of closest approach (UTC) | 2021 Mar 07 01:21:37.615 |
| Minimum distance | 7.051 km |
| Height difference | 3.810 km |
| Relative speed | 15.123 km/s |
| Angle between velocity vectors | 179° |
| Geographic position | 24.6°S, 123.4°W |
| Height | 635 km |
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