| Primary satellite | Secondary satellite |
| Name | Cosmos 1328 Rocket | PSLV DEB |
| Spacetrack catalog number | 12988 | 27124 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Apr 13 05:20 | 2021 Apr 13 04:59 |
| Time of closest approach (UTC) | 2021 Mar 04 10:31:18.230 |
| Minimum distance | 1.081 km |
| Height difference | -0.105 km |
| Relative speed | 15.051 km/s |
| Angle between velocity vectors | 176° |
| Geographic position | 75.7°S, 131.6°E |
| Height | 652 km |
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