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Working groups include the Working Group for Planetary System Nomenclature (WGPSN), which maintains the IAU naming conventions for planetary bodies.
The IAU is also responsible for the system of Astronomical Telegrams , although it does not run it.
The IAU was founded in 1919, as a merger of various international projects including the Carte du Ciel, the Solar Union and the International Time Bureau (Bureau International de l'Heure). The first president was Benjamin Baillaud.