The Central Bureau for Astronomical Telegrams (CBAT) is the official international clearing house for information relating to transient astronomical events. A clearing house (or clearinghouse) is an organization affiliated with a securities or derivatives exchange that completes the transactions on that exchange by seeing to validation, delivery, and settlement. ...

The CBAT collects and distributes information on comets, natural satellites, novae, supernovae and other transient astronomical events. CBAT also establishes priority of discovery (who gets credit for it) and assigns names to new objects. Comet Hale-Bopp A comet (denoted by ☄) is a small body in the solar system that orbits the sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail — both due primarily to the effects of solar radiation upon the comets nucleus, which itself is a... -1... This article needs to be cleaned up to conform to a higher standard of quality. ... Multiwavelength X-ray image of the remnant of Keplers Supernova, SN 1604. ...

On behalf of the International Astronomical Union (IAU), the CBAT distributes IAU Circulars (IAUCs). From the 1920s to the 1990s, the CBAT sent telegrams in urgent cases. For such cases, Central Bureau Eletronic Telegrams (CBETs) are used since 2002. Logo of the IAU The International Astronomical Union (IAU) unites national astronomical societies from around the world. ... Sometimes referred to as the Jazz Age or primarily in North America and in Australia as the Roaring Twenties . In Europe it is sometimes refered to as the Golden Twenties. ... The 1990s decade refers to the years from 1990 to 1999, inclusive, the last decade of the 20th Century. ...

The first Central Bureau, founded in the 1880s in Kiel, was moved to Copenhagen University Observatory in World War I. In 1922, the IAU made the Central Bureau in Copenhagen its official Bureau Central des Télégrammes Astronomiques (Central Bureau for Astronomical Telegrams). On January 1, 1965, the CBAT moved to the Harvard College Observatory. It has remained in Cambridge, Massachusetts to this day. Kiel [keel, â–¶ (help· info)] is a city in northern Germany and the capital of the Bundesland Schleswig-Holstein. ... Combatants Entente Powers Central Powers Commanders {{{commander1}}} {{{commander2}}} Strength {{{strength1}}} {{{strength2}}} Casualties > 5 million military deaths > 3 million military deaths World War I, also known as the First World War and (before 1939) the Great War, the War of the Nations, War to End All Wars was a world conflict... January 1 is the first day of the calendar year in both the Julian and Gregorian calendars. ... 1965 (MCMLXV) was a common year starting on Friday (link goes to calendar). ... Harvard College Observatory, about 1900. ... Cambridge City Hall Cambridge is a city in the Greater Boston area of Massachusetts, United States. ...

The CBAT is a non-profit organization but charges for its services to finance its continued operation. A nonprofit organization (sometimes abbreviated to not-for-profit, non-profit or NPO) is an organization whose primary objective is to support some issue or matter of private interest or public concern for non-commercial purposes. ...

External link

• IAU: Central Bureau for Astronomical Telegrams homepage