| Primary satellite | Secondary satellite |
| Name | Cosmos 1727 Rocket | deb r/b Ablestar |
| Spacetrack catalog number | 16511 | 3744 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2026 Jan 13 13:12 | 2026 Jan 12 08:02 |
| Time of closest approach (UTC) | 2025 Dec 21 23:58:29.302 |
| Minimum distance | 144.459 km |
| Height difference | -2.767 km |
| Relative speed | 12.118 km/s |
| Angle between velocity vectors | 111° |
| Geographic position | 60.2°N, 150.6°E |
| Height | 995 km |
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