31 relations: Alpha Delphini, Angular distance, Binary star, Bright Star Catalogue, Centre de données astronomiques de Strasbourg, Chinese language, Constellation, Delphinus, Delta Delphini, Durchmusterung, Epoch (astronomy), Flamsteed designation, Gamma Delphini, Giant star, Girl (Chinese constellation), Giuseppe Piazzi, Henry Draper Catalogue, Hipparcos, Minute and second of arc, Niccolò Cacciatore, Orbital eccentricity, Orbital inclination, Orbital period, Sherburne Wesley Burnham, SIMBAD, Smithsonian Astrophysical Observatory Star Catalog, Stellar classification, Subgiant, United States Naval Observatory, Washington Double Star Catalog, Zeta Delphini.
Alpha Delphini (α Del, α Delphini) is a multiple star in the constellation Delphinus.
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In mathematics (in particular geometry and trigonometry) and all natural sciences (including astronomy, geophysics, etc.), the angular distance (angular separation, apparent distance, or apparent separation) between two point objects, as observed from a location different from either of these objects, is the size of the angle between the two directions originating from the observer and pointing towards these two objects.
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A binary star is a star system consisting of two stars orbiting around their common center of mass.
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The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a star catalogue that lists all stars of stellar magnitude 6.5 or brighter, which is roughly every star visible to the naked eye from Earth.
The Centre de données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
Chinese (汉语 / 漢語; Hànyǔ or 中文; Zhōngwén) is a group of related but in many cases mutually unintelligible language varieties, forming a branch of the Sino-Tibetan language family.
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In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).
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Delphinus is a constellation in the northern sky, close to the celestial equator.
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Delta Delphini is a giant star in the constellation Delphinus.
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In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
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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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Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek and Roman letters.
Gamma Delphini (γ Del, γ Delphini) is a binary star system approximately 101 light-years away in the constellation of Delphinus.
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A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.
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The Girl mansion (女宿, pinyin: Nǚ Xiù) is one of the Twenty-eight mansions of the Chinese constellations.
Giuseppe Piazzi (16 July 1746 – 22 July 1826) was an Italian Catholic priest of the Theatine order, mathematician, and astronomer.
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The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
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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.
Niccolò Cacciatore (26 January 1770 – 28 January 1841) was an Italian astronomer.
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The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.
Orbital inclination is the angle between a reference plane and the orbital plane or axis of direction of an object in orbit around another object.
The orbital period is the time taken for a given object to make one complete orbit around another object.
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Sherburne Wesley Burnham (December 12, 1838 – March 11, 1921) was an American astronomer.
SIMBAD (the Set of Identifications, Measurements, and Bibliography for Astronomical Data) is an astronomical database of objects beyond the Solar System.
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The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
A subgiant is a star that is slightly brighter than a normal main-sequence (dwarf) star of the same spectral class, but not as bright as true giant stars.
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The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.
The Washington Double Star Catalog, or WDS, is a catalog of double stars, maintained at the United States Naval Observatory.
Zeta Delphini (ζ Del) is a star in the constellation Delphinus.
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6 Del, 6 Delphini, ADS 14073, ADS 14073 A, ADS 14073 AB, ADS 14073 B, ADS 14073 C, ADS 14073 D, ADS 14073 E, BD +14 4369, BD +14 4369A, BD +14 4369B, BD +14 4369C, BD +14 4369D, BD +14 4369E, BD+14 4369, BD+14 4369A, BD+14 4369B, BD+14 4369C, BD+14 4369D, BD+14 4369E, Beta Del, CCDM J20375+1436, CCDM J20375+1436A, CCDM J20375+1436AB, CCDM J20375+1436B, CCDM J20375+1436C, CCDM J20375+1436D, CCDM J20375+1436E, GC 28709, HD 196524, HIP 101769, HR 7882, IDS 20328+1415, Rotanev, SAO 106316, Β Del, Β Delphini.