| Primary satellite | Secondary satellite |
| Name | Cosmos 1766 | ASTROCAST-0105 |
| Spacetrack catalog number | 16881 | 47517 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2025 Apr 17 21:56 | 2025 Apr 19 03:22 |
| Time of closest approach (UTC) | 2024 Jun 25 12:44:18.628 |
| Minimum distance | 1219.253 km |
| Height difference | -83.776 km |
| Relative speed | 14.951 km/s |
| Angle between velocity vectors | 158° |
| Geographic position | 65.3°N, 64.8°W |
| Height | 547 km |
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