Proper noun
IAU
(astronomy) Initialism of International Astronomical Union (an association of professional astronomers, founded in 1919.)
A. Barucci Trans Neptunian Objects’ surface properties, IAU Symposium No. 229, Asteroids, Comets, Meteors, Aug 2005, Rio de Janeiro Very red objects present a steep slope, reflecting much more in red and infrared. Source: Internet
According to the IAU, "the term 'minor planet' may still be used, but generally the term 'Small Solar System Body' will be preferred." Source: Internet
As of 2008, only five objects in the Solar System (Ceres, Eris, and the KBOs Pluto, Makemake and Haumea) are listed as dwarf planets by the IAU. Source: Internet
Although many accepted the reclassification, some sought to overturn the decision with online petitions urging the IAU to consider reinstatement. Source: Internet
A resolution introduced by some members of the California State Assembly facetiously called the IAU decision a "scientific heresy". Source: Internet
Designations of stars (and other celestial bodies) is currently mediated in the scientific community by the International Astronomical Union (IAU). Source: Internet