It was discovered on 29 September 1884 by Austrian astronomer Johann Palisa at Vienna Observatory
The Vienna Observatory had the world's largest refracting telescope in 1883, 27 inch f/15.4

https://en.wikipedia.org/wiki/243_Ida

https://en.wikipedia.org/wiki/Vienna_Observatory

https://science.nasa.gov/mission/galileo/

Distance from the Sun (au) : 2.751

Time: 18:40UT 2026-03-05 Exp. 23 x 30 sec.
Tel. 0.254m f/5.8 ST-10XME CCD @ -25°C 1.9"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.