EntityQ123963· pop 27· linked from 41 articlesRobert Julius TrumplerSign in to saveSwiss-American astronomer (1886-1956)Person · Open LibraryWorks1Top worksStatistical astronomy ...via Open Library + WikidataConnectionsopen clusterEntityDoctor of PhilosophyEntityCategories1886 births1956 deaths20th-century American astronomers20th-century Swiss astronomersMembers of the United States National Academy of SciencesSwiss emigrants to the United StatesUniversity of California, Berkeley faculty