| Primary satellite | Secondary satellite |
| Name | DIDO 2 | Cosmos 1726 |
| Spacetrack catalog number | 42000 | 16495 |
| Radar cross section | small | large |
| Epoch of two-line elements (UTC) | 2023 Sep 20 16:54 | 2023 Sep 20 18:43 |
| Time of closest approach (UTC) | 2023 Jun 07 17:17:11.204 |
| Minimum distance | 120.123 km |
| Height difference | -4.100 km |
| Relative speed | 15.224 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 40.1°S, 126.0°W |
| Height | 489 km |
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