ASJ

asj is a string that can function as an acronym, a proper noun, or a code in different fields. There is no single, universally recognized meaning for asj. The most prominent use of the capitalized form ASJ is as the abbreviation for the Astronomical Society of Japan, a national organization of professional astronomers. The society promotes astronomy in research and education, organizes meetings, and publishes the journal Publications of the Astronomical Society of Japan (PASJ).

Beyond the Astronomical Society of Japan, ASJ is used by various organizations, projects, and brands as an acronym or identifier. Because such uses are context-dependent and not standardized, interpreting ASJ requires looking at accompanying information such as geography, field, or the full name presented. In practice, finding the intended meaning typically depends on the source or document in which the acronym appears.