3457 Arnenordheim is a main-belt asteroid. It was discovered on September 5, 1985 at the European Southern Observatory by Henri Debehogne and is named after the Norwegian composer Arne Nordheim.

https://nn.wikipedia.org/wiki/3457_Arnenordheim

Henri Debehogne (30 December 1928 – 9 December 2007) was a Belgian astronomer and a prolific discoverer of asteroids.

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

Arne Nordheim (20 June 1931 – 5 June 2010) was a Norwegian composer. Nordheim received numerous awards for his compositions, and from 1982 lived in the Norwegian government's honorary residence, Grotten, next to the Royal Palace in Oslo https://en.wikipedia.org/wiki/Arne_Nordheim

Some nearby stars reveal themselves by their proper motion over a period of time from approximately 1955 to the present day.

Sun distance (au): 3,00 Mag. 17,2

Time: 19:37UT 2026-02-21 Exp. 80 x 30sec.
Tel. 0.254m f/5.8 ST-10XME CCD @ -25°C 1.9"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.