Open AccessKeep it down! AU becomes au, and is defined in metres
Publication year - 2012
Publication title -
astronomy & geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.168
H-Index - 22
eISSN - 1468-4004
pISSN - 1366-8781
DOI - 10.1111/j.1468-4004.2012.53504_13.x
Subject(s) - geology , physics , computer science
Division 1 of the IAU recommended that the astronomical unit – originally the length of the semi‐major axis of the Earth's orbit – be redefined as a fixed number of kilometres.