| Primary satellite | Secondary satellite |
| Name | Cosmos 1331 Rocket | Cosmos 676 Rocket |
| Spacetrack catalog number | 13028 | 7434 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Mar 06 08:53 | 2021 Mar 06 12:48 |
| Time of closest approach (UTC) | 2021 Jan 21 20:05:11.833 |
| Minimum distance | 0.942 km |
| Height difference | 0.654 km |
| Relative speed | 14.264 km/s |
| Angle between velocity vectors | 146° |
| Geographic position | 21.4°N, 70.4°E |
| Height | 776 km |
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