| Primary satellite | Secondary satellite |
| Name | Cosmos 1805 | LilacSat-2 |
| Spacetrack catalog number | 17191 | 40908 |
| Radar cross section | large | small |
| Epoch of two-line elements (UTC) | 2024 Dec 22 15:10 | 2024 Dec 22 19:48 |
| Time of closest approach (UTC) | 2024 Dec 23 15:49:31.236 |
| Minimum distance | 4.817 km |
| Height difference | 4.381 km |
| Relative speed | 15.226 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 78.0°S, 77.6°E |
| Height | 496 km |
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