The name jointly honors all the women on the staff of the Astronomisches Rechen-Institut. It is combined from the word “harem” and the abbreviation “ARI”. This often published version for the meaning of the name is not fully correct. Reinmuth has been asked by some collaborators of the ARI to ‘donate’ planets for their girl-friends, popular actresses etc. He compiled all these suggestions to this peculiar term. However, Reinmuth did not want to publish the original meaning and he, therefore, devised the interpretation of the first sentence in 1948. (I. van Houten-Groeneveld) _ _.