523 Ada is a minor planet orbiting the Sun. It was discovered January 29, 1904, by American astronomer Raymond S. Dugan at Heidelberg, Germany and was named after his friend Ada Helme.

https://en.wikipedia.org/wiki/523_Ada

Raymond Smith Dugan (May 30, 1878 – August 31, 1940) was an American astronomer. His undergraduate and Masters was from Amherst College in Massachusetts in 1899 and 1902. Dugan then received his Ph.D. dissertation in 1905 at the Landessternwarte Heidelberg-Königstuhl (Königstuhl Observatory, near Heidelberg) at the University of Heidelberg, Germany.
At the time, the observatory at Heidelberg was a center of asteroid discovery under Max Wolf. During Dugan's stay there, he discovered 16 asteroids between 1902 and 1904.

Dugan was elected to the American Philosophical Society in 1931. The lunar crater Dugan and the main-belt asteroid 2772 Dugan are named in his honour

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

Distance from the Sun (au) : 2,56

Time: 20:46UT 2025-11-16 Exp. 10 x 5 sec. Each
Tel. 0.254m f/5.8 ST-10XME CCD @ -35°C 0.95"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.