Preface; Part I – Division A: Fundamental Astronomy: Commission 4: Ephemerides; Commission 4 Working Group on Standardizing Access to Ephemerides and File Format Specification; Commission 7: Celestial Mechanics; Commission 8: Astrometry; Commission 19: Rotation of the Earth; Commission 31: Time; Part II – Division B: Facilities, Technologies and Data Science: Commission 5: Documentation; Commission 6: Astronomical Telegrams; Commission 14: Atomic and Molecular Data; Commission 14 Working Group on Atomic Data; Commission 14 Working Group on Collision Processes; Commission 14 Working Group on Molecular Data; Commission 14 Working Group on Solids and Their Surfaces; Commission 25: Photometry and Polarimetry; Commission 40: Radio Astronomy; Commission 50: Protection of Existing and Potential Observatory Sites; Part III – Division C: Education, Outreach, and Heritage; Commission 41: History of Astronomy; Commission 46: Education and Development; Commission 55: Communicating Astronomy with the Public; Part IV – Division D: High-Energy Phenomena and Fundamental Physics: Commission 44: Space and High-Energy Astrophysics; Part V – Division E: Sun and Heliosphere: Commission C10: Solar Activity; Commission C12: Solar Radiation and Structure; Commission C49: Interplanetary Plasma; Part VI – Division F: Planetary Systems: Commission C15: Physical Study of Comets and Minor Planets; Commission C20: Positions and Motions of Minor Planets, Comets and Satellites; Commission 22: Meteors, Meteorites and Interplanetary Dust; Commission 51: Bio-Astronomy; Commission 53: Extrasolar Planets; Part VII – Division G: Stars and Stellar Physics: Commission 26: Double and Multiple Stars; Commission 27: Variable Stars; Commission 29: Stellar Spectra; Commission 35: Stellar Constitution; Commission 36: Stellar Atmospheres; Commission 42: Close Binary Stars; Commission 45: Stellar Classification; Part VIII – Division H: Insterstellar Medium and Local Universe; Commission 33: Galactic System; Commission 34: Interstellar Medium; Commission 37: Star Clusters and Associations; Part IX – Division J: Galaxies and Cosmology; Commission 21: Background Radiation; Commission 28: Galaxies; Part X – Executive Committee: Working Group: Women in Astronomy; Working Group: Public Naming of Planets and Planetary Satellites; Working Group: Cosmic Light (2015 International Year of Light).
