| Primary satellite | Secondary satellite |
| Name | Cosmos 1726 | COSMOS 1408 DEB |
| Spacetrack catalog number | 16495 | 50619 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2022 May 24 04:44 | 2022 May 24 03:25 |
| Time of closest approach (UTC) | 2022 Jan 27 16:23:13.264 |
| Minimum distance | 5055.212 km |
| Height difference | 24.721 km |
| Relative speed | 14.561 km/s |
| Angle between velocity vectors | 147° |
| Geographic position | 23.1°S, 12.2°W |
| Height | 509 km |
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