Astronomical Calculation Institute (Heidelberg University)

In 1945 the Institute was moved by the Americans nearer to the United States Army Garrison Heidelberg.

During 1938–1945, whilst based in Berlin, ARI published the academic journal Astronomical Notes (German: Astronomische Nachrichten).

As of 2016[update], ARI was not limited to only publishing star catalogs, but has a wider research scope, including gravitational lensing, galaxy evolution, stellar dynamics, and cosmology.

In 2007 professors Eva K. Grebel and Joachim Wambsganß (de) became co-directors of the institute.

Other researchers involved with the institute include Hartmut Jahreiß author of the updated Gliese Catalogue of Nearby Stars; Eugene Rabe; Lutz D. Schmadel, author of the Dictionary of Minor Planet Names; Hans Scholl; and Rainer Spurzem working with N-body simulations.