| 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 14:15:30.160 |
| Minimum distance | 4.459 km |
| Height difference | 4.419 km |
| Relative speed | 15.226 km/s |
| Angle between velocity vectors | 180° |
| Geographic position | 78.1°S, 101.4°E |
| Height | 496 km |
|