| Primary satellite | Secondary satellite |
| Name | Cosmos 1733 | FLOCK EP 8 |
| Spacetrack catalog number | 16611 | 46816 |
| Radar cross section | large | medium |
| Epoch of two-line elements (UTC) | 2021 Jan 20 03:53 | 2021 Jan 20 08:19 |
| Time of closest approach (UTC) | 2020 Dec 06 17:47:56.217 |
| Minimum distance | 0.974 km |
| Height difference | -0.937 km |
| Relative speed | 15.198 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 72.9°N, 33.6°E |
| Height | 534 km |
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