It was discovered on 19 March 1936, by Soviet astronomer Grigory Nikolayevich Neujmin at the Simeiz Observatory on the Crimean peninsula. On the same night, it was independently discovered by Serbian astronomer Petar Ðurkovic at Uccle Observatory in Belgium ( "No access for the public" )

Simeiz Observatory
https://en.wikipedia.org/wiki/Simeiz_Observatory

Uccle The Royal Observatory of Belgium
https://www.tintin.com/en/news/4358/the-royal-observatory-of-belgium#

Time: 23:12UT 2025-06-23 Exp. 16 x 15 sec.
Telescope 0.254m f/6 ST-10XME CCD -15°C 0.9"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.