Astronomical Computing Institute

from Wikipedia, the free encyclopedia
Astronomical Computing Institute
Astronomical Computing Institute
Astronomical Computing Institute
Category: University institute
Carrier: University of Heidelberg
Legal form of the carrier: Public corporation
Facility location: Heidelberg
Type of research: applied basic research
Subjects: natural Science
Areas of expertise: Astronomy , astrophysics
Basic funding: State of Baden-Württemberg
Management: Joachim Wambsganß and Eva K. Grebel
Employee: 107 (as of April 2012)

The Astronomical Computing Institute ( ARI ) has been a sub-institute of the Center for Astronomy of the University of Heidelberg (ZAH) since January 1st, 2005 and was previously a research institute for astrometry and stellar dynamics of the state of Baden-Württemberg .

At the same time, it is the most important international institution for calculating astronomical data and services ( ephemeris of stars, bodies of the solar system , yearbooks and the fundamental astronomical system ).


The ARI has been based in Heidelberg since 1945 and celebrated its 300th anniversary in May 2000. The ARI goes back to the Electoral Brandenburg Society of Sciences founded in Berlin in 1700 , the first astronomer of which was Gottfried Kirch , and the Berlin observatory .

In 1874 Wilhelm Foerster founded the institute due to the constantly growing scope of the computation of the astronomical ephemeris , which moved into its own building in Berlin's Lindenstrasse 91, on the premises and in connection with the observatory, as the "computing institute for the publication of the Berlin Astronomical Yearbook" . The majority of astronomers now worked in this theoretical part of the overall facility - in addition to the practical, observational part of the observatory itself. Under Foerster's supervision, the computing institute was headed by the “conductor” Friedrich Tietjen , who had worked at the observatory since 1861. He discovered the asteroid (86) Semele in 1865 .

After Tietjen's death, Julius Bauschinger was appointed to Berlin as his successor in 1896 . He achieved full independence for the institute in the following year. In 1912 it moved into a new building at Altensteinstrasse 40 in Berlin-Lichterfelde . In 1944 it was subordinated to the Navy and relocated to Sermuth in Saxony to avoid bomb damage . After the Second World War , most of the ARI was relocated to Heidelberg by its 18th director , August Kopff . Only the small remnant that remained in Sermuth came to the observatory, which had moved to Potsdam-Babelsberg , and was reintegrated into it in 1956.


The institute issues the following publications, among others:

In addition, a number of Heidelberg scientists work on research projects in astrometry and other areas of celestial science.

Web links

Individual evidence

  1. ^ Roland Wielen (ARI): The calendar patent from May 10, 1700 and the history of the Astronomical Computing Institute. 2000, archived from the original on July 20, 2007 ; accessed on June 17, 2016 (address at the ceremony on May 10, 2000).
  2. ^ ARI: Separation of the Astronomical Computing Institute from the Berlin observatory. Retrieved June 17, 2016 .
  3. ^ ARI: On the history of the Astronomical Computing Institute. Retrieved June 17, 2016 .

Coordinates: 49 ° 25 ′ 3.9 ″  N , 8 ° 41 ′ 15.9 ″  E