21 relations: Astronomische Gesellschaft Katalog, Astronomische Nachrichten, Epoch (astronomy), Frank Schlesinger, Friedrich Bessel, Friedrich Georg Wilhelm von Struve, George Comstock (astronomer), Google Books, Light-year, Minute and second of arc, Observatory of Strasbourg, Orion (constellation), Parsec, Popular Astronomy (US magazine), Red dwarf, Russian Academy of Sciences, Saint Petersburg, Stellar classification, Struve 2398, The Astrophysical Journal, 1 petametre.
The Astronomische Gesellschaft Katalog (AGK) is an astrometric star catalogue.
Astronomische Nachrichten (Astronomical Notes), one of the first international journals in the field of astronomy, was founded in 1821 by the German astronomer Heinrich Christian Schumacher.
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
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Frank Schlesinger (May 11, 1871 New York City – July 10, 1943 Old Lyme, Connecticut) was an American astronomer.
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Friedrich Wilhelm Bessel (22 July 1784 – 17 March 1846) was a German astronomer, mathematician, physicist and geodesist.
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Friedrich Georg Wilhelm von Struve (Vasily Yakovlevich Struve) (April 15, 1793 – November 23, 1864 (Julian calendar: November 11)) was a German astronomer from a famous dynasty.
George Cary Comstock (February 12, 1855 – May 11, 1934) was an American astronomer and educator.
Google Books (previously known as Google Book Search and Google Print) is a service from Google Inc. that searches the full text of books and magazines that Google has scanned, converted to text using optical character recognition, and stored in its digital database.
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A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.
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A minute of arc (MOA), arcminute (arcmin) or minute arc is a unit of angular measurement equal to one-sixtieth of one degree.
The Observatory of Strasbourg is an astronomical observatory in Strasbourg, France.
Orion is a prominent constellation located on the celestial equator and visible throughout the world.
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A parsec (symbol: pc) is a unit of length used to measure the astronomically large distances to objects outside the Solar System.
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Popular Astronomy was a magazine for amateur astronomers published between 1893 and 1951.
A red dwarf is a small and relatively cool star on the main sequence, either late K or M spectral type.
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The Russian Academy of Sciences (RAS) (Росси́йская акаде́мия нау́к (РАН) Rossíiskaya akadémiya naúk) consists of the national academy of Russia; a network of scientific research institutes from across the Russian Federation; and additional scientific and social units such as libraries, publishing units, and hospitals.
Saint Petersburg (p) is the second largest city in Russia, politically incorporated as a federal subject (a federal city).
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In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Struve 2398 (Gliese 725) is a binary star system in the constellation Draco.
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The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
To help compare different distances this page lists lengths starting at 1015 m (1 Pm or 1,000,000 million km or 6685 astronomical units (AU) or 0.11 light years).
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