| Primary satellite | Secondary satellite |
| Name | Cosmos 1707 | EO 1 Del DPAF |
| Spacetrack catalog number | 16326 | 26623 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 15 01:19 | 2021 Jan 15 11:35 |
| Time of closest approach (UTC) | 2020 Dec 01 09:00:52.893 |
| Minimum distance | 72.758 km |
| Height difference | -2.172 km |
| Relative speed | 15.100 km/s |
| Angle between velocity vectors | 168° |
| Geographic position | 80.4°S, 149.7°E |
| Height | 543 km |
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