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A first version was created in 2013, a more refined version in April 2014. In total, the Attitude Star Catalog contains 8,173,331 entries with information on position, proper motion and magnitude. [4] Starting with Gaia DR2, the Attitude Star Catalog was replaced with a new list generated from the Gaia Main Data Base (MDB), using the same criteria.
Guide Star Catalog. The Guide Star Catalog ( GSC ), also known as the Hubble Space Telescope, Guide Catalog ( HSTGC ), is a star catalog compiled to support the Hubble Space Telescope with targeting off-axis stars. GSC-I contained approximately 20,000,000 stars with apparent magnitudes of 6 to 15. GSC-II contains 945,592,683 stars out to ...
Scholar-official as a concept and social class first appeared during the Warring States period; before that, the Shi and Da Fu were two different classes. During the Western Zhou dynasty, the Duke of Zhou divided the social classes into the king, feudal lords, Da Fu, Shi, ordinary people, and slaves.
A new federal rule protecting LGBT students from discrimination in schools and colleges based on gender identity that took effect on Thursday remained blocked in 26 states after the U.S. Supreme ...
September 1994. First version for Windows 3.1. Windows, Mac, SunOS, Solaris, HP-UX, IRIX, AIX, OS/2. Acrobat Catalog, which creates searchable indexes for PDF files. Adobe also released the first Acrobat Plug-ins SDK; allowing third-party developers to create plug-in programs for the Acrobat Exchange application. 3.0.
Messier Catalog – The Messier objects are a set of astronomical objects first listed by French astronomer Charles Messier in 1771. Nebulae and Star Clusters was published in 1781, with objects M1 – M110. New General Catalogue compiled in the 1880s by J. L. E. Dreyer, lists objects NGC 0001 – NGC 7840. The NGC is one of the largest ...
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
Versions 2.0.0, 2.0.1 and 2.0.2 are subtly different, and different vendors implement them with variations. [5] Typically a CSW server will accept requests in one CSW version only, and it is up to the client to be flexible. e.g. ESRI Geoportal can be configured to harvest documents from CSW servers of a variety of versions and vendor variants [6] such as "GeoNetwork CSW 2.0.2 APISO".