The International Astronomical Union (IAU; French: Union astronomique internationale, UAI) is an international non-governmental organization (INGO) with...

abbreviations have been in use for the astronomical unit. In a 1976 resolution, the International Astronomical Union (IAU) had used the symbol A to denote...

constants, along with recommended values, have been defined by the International Astronomical Union (IAU) several times: in 1964 and in 1976 (with an update in...

objects, and where relevant, features of those objects. The International Astronomical Union (IAU) is the recognized authority in astronomy for assigning...

by the International Astronomical Union (IAU) in 1976 via Resolution No. 1, and has been significantly updated in 1994 and 2009 (see Astronomical constant)...

contemporary astronomy, 88 constellations are recognized by the International Astronomical Union (IAU). Each constellation is a region of the sky bordered by...

Retrieved 16 January 2023. "2023 AC1". Minor Planet Center. International Astronomical Union. Retrieved 16 January 2023. The uncertainty region for 2023...

question marks, boxes, or other symbols. Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and...

The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU)...

the years, including president and vice-president of the International Astronomical Union's Commission 6 and Commission 20. In 1961, asteroid 1657 Roemera...

abbreviation comes as a result of the International Telecommunication Union and the International Astronomical Union wanting to use the same abbreviation...

Gold Medal of the Royal Astronomical Society. The RAS is the UK adhering organisation to the International Astronomical Union and a member of the UK Science...

quasars and the most distant galaxies. In August 2015, the International Astronomical Union (IAU) passed Resolution B2 which, as part of the definition...

International Council of Nurses International Association for Plant Taxonomy International Association of Hydrogeologists International Astronomical Union...

described as binary planets. At its 2006 General Assembly, the International Astronomical Union considered a proposal that Pluto and Charon be reclassified...

Commission 5 (April 2008). "Naming Astronomical Objects". International Astronomical Union (IAU). Archived from the original on 2 August 2010. Retrieved...

These names of stars that have either been approved by the International Astronomical Union or which have been in somewhat recent use. IAU approval comes...

diverse and inclusive astronomical community. In 1970, a group of secondary school students established Hong Kong Amateur Astronomical Union (AAU)... which was...

Planet Center. International Astronomical Union. Retrieved 1 January 2023. "2022 YW6". Minor Planet Center. International Astronomical Union. Retrieved 1...

becoming b, B becoming c, and C becoming d. In July 2014, the International Astronomical Union launched NameExoWorlds, a process for giving proper names to...

All stars but one can be associated with an IAU (International Astronomical Union) constellation. IAU constellations are areas of the sky. Although there...

Astrometry Tools (PDF) (Software version 11; Document 1.6 ed.), International Astronomical Union, 2014, pp. 12, 71–73, retrieved 23 June 2016, The accuracy...

constellation, albeit as a specific region of the sky, by the International Astronomical Union. It was originally defined in ancient texts as a specific pattern...

their radial velocities by astronomical spectroscopy. The 88 constellations recognized by the International Astronomical Union as well as those that cultures...

which is approximately 5.88 trillion mi. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a...

International Celestial Reference System (ICRS) groups. The IERS was established in its present form in 1987 by the International Astronomical Union and...

there are eight official planets in the Solar System per the International Astronomical Union (IAU), which has also established a definition for exoplanets...

Nanakahili Wailoa Kiʻo (last born) On September 17, 2008, the International Astronomical Union named the fifth known dwarf planet in the Solar System Haumea...

the International Union for Cooperation in Solar Research (which later became the International Astronomical Union) defined the international angstrom...

The International Astronomical Union (IAU) defined in August 2006 that, in the Solar System, a planet is a celestial body that: is in orbit around the...