Faster access than browser!
51 relations: Al Achsasi al Mouakket, Angular diameter, Angular distance, Apparent magnitude, Astronomical unit, Asymptotic giant branch, Bayer designation, Binary star, Birkhäuser, Boss General Catalogue, Bright Star Catalogue, Cambridge University Press, Carnegie Institution for Science, Catalog of Components of Double and Multiple Stars, Catalogues of Fundamental Stars, Chinese language, Constellation, Corona Australis, Delta Sagittarii, Dover Publications, Durchmusterung, Earth, Epsilon Sagittarii, F-type main-sequence star, Gamma Sagittarii, Glossary of astronomy, Henry Draper Catalogue, Hipparcos, Index Catalogue of Visual Double Stars, Irregular variable, Milky Way, Minute and second of arc, Monthly Notices of the Royal Astronomical Society, Orbit, Parallax, Position angle, PPM Star Catalogue, Proper motion, Red giant, Sagittarius (constellation), Sherburne Wesley Burnham, Slow irregular variable, Smithsonian Astrophysical Observatory Star Catalog, Solar radius, Stellar classification, Stellar evolution, University of Illinois at Urbana–Champaign, Warida, Washington Double Star Catalog, Winnowing Basket (Chinese constellation), ..., Zodiac. Expand index (1 more) »
Al Achsasi al Mouakket
Muḥammad al-Akhṣāṣī al-Muwaqqit (محمد الاخصاصي الموقت) was an Egyptian astronomer whose calendarium and catalogue of stars, al-Durrah al-muḍīyah fī al-ʻamāl al-shamsīyah ("Pearls of brilliance upon the solar operations"), was written at Cairo about 1650.
New!!: Eta Sagittarii and Al Achsasi al Mouakket · See more »
Angular diameter
The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.
New!!: Eta Sagittarii and Angular diameter · See more »
Angular distance
In mathematics (in particular geometry and trigonometry) and all natural sciences (e.g. astronomy and geophysics), the angular distance (angular separation, apparent distance, or apparent separation) between two point objects, as viewed from a location different from either of these objects, is the angle of length between the two directions originating from the observer and pointing toward these two objects.
New!!: Eta Sagittarii and Angular distance · See more »
Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
New!!: Eta Sagittarii and Apparent magnitude · See more »
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
New!!: Eta Sagittarii and Astronomical unit · See more »
Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
New!!: Eta Sagittarii and Asymptotic giant branch · See more »
Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
New!!: Eta Sagittarii and Bayer designation · See more »
Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
New!!: Eta Sagittarii and Binary star · See more »
Birkhäuser
Birkhäuser is a former Swiss publisher founded in 1879 by Emil Birkhäuser.
New!!: Eta Sagittarii and Birkhäuser · See more »
Boss General Catalogue
Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.
New!!: Eta Sagittarii and Boss General Catalogue · See more »
Bright Star Catalogue
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.
New!!: Eta Sagittarii and Bright Star Catalogue · See more »
Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
New!!: Eta Sagittarii and Cambridge University Press · See more »
Carnegie Institution for Science
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research.
New!!: Eta Sagittarii and Carnegie Institution for Science · See more »
Catalog of Components of Double and Multiple Stars
The Catalog of Components of Double and Multiple Stars, or CCDM, is an astrometric star catalogue of double and multiple stars.
New!!: Eta Sagittarii and Catalog of Components of Double and Multiple Stars · See more »
Catalogues of Fundamental Stars
The Catalogue of Fundamental Stars is a series of six astrometric catalogues of high precision positional data for a small selection of stars to define a celestial reference frame, which is a standard coordinate system for measuring positions of stars.
New!!: Eta Sagittarii and Catalogues of Fundamental Stars · See more »
Chinese language
Chinese is a group of related, but in many cases mutually unintelligible, language varieties, forming a branch of the Sino-Tibetan language family.
New!!: Eta Sagittarii and Chinese language · See more »
Constellation
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
New!!: Eta Sagittarii and Constellation · See more »
Corona Australis
Corona Australis is a constellation in the Southern Celestial Hemisphere.
New!!: Eta Sagittarii and Corona Australis · See more »
Delta Sagittarii
Delta Sagittarii (δ Sagittarii, abbreviated Delta Sgr, δ Sgr), also named Kaus Media, is a double star in the southern zodiac constellation of Sagittarius.
New!!: Eta Sagittarii and Delta Sagittarii · See more »
Dover Publications
Dover Publications, also known as Dover Books, is an American book publisher founded in 1941 by Hayward Cirker and his wife, Blanche.
New!!: Eta Sagittarii and Dover Publications · See more »
Durchmusterung
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.
New!!: Eta Sagittarii and Durchmusterung · See more »
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
New!!: Eta Sagittarii and Earth · See more »
Epsilon Sagittarii
Epsilon Sagittarii (ε Sagittarii, abbreviated Epsilon Sgr, ε Sgr), also named Kaus Australis, is a binary star system in the southern zodiac constellation of Sagittarius.
New!!: Eta Sagittarii and Epsilon Sagittarii · See more »
F-type main-sequence star
An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.Tables VII and VIII.
New!!: Eta Sagittarii and F-type main-sequence star · See more »
Gamma Sagittarii
The Bayer designation γ Sagittarii (Gamma Sagittarii) is shared by two stars in the constellation Sagittarius.
New!!: Eta Sagittarii and Gamma Sagittarii · See more »
Glossary of astronomy
This page is a glossary of astronomy.
New!!: Eta Sagittarii and Glossary of astronomy · See more »
Henry Draper Catalogue
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.
New!!: Eta Sagittarii and Henry Draper Catalogue · See more »
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
New!!: Eta Sagittarii and Hipparcos · See more »
Index Catalogue of Visual Double Stars
The Index Catalogue of Visual Double Stars, or IDS, is a catalog of double stars.
New!!: Eta Sagittarii and Index Catalogue of Visual Double Stars · See more »
Irregular variable
An irregular variable is a type of variable star in which variations in brightness show no regular periodicity.
New!!: Eta Sagittarii and Irregular variable · See more »
Milky Way
The Milky Way is the galaxy that contains our Solar System.
New!!: Eta Sagittarii and Milky Way · See more »
Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
New!!: Eta Sagittarii and Minute and second of arc · See more »
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
New!!: Eta Sagittarii and Monthly Notices of the Royal Astronomical Society · See more »
Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
New!!: Eta Sagittarii and Orbit · See more »
Parallax
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
New!!: Eta Sagittarii and Parallax · See more »
Position angle
Position angle, usually abbreviated PA, is the convention for measuring angles on the sky in astronomy.
New!!: Eta Sagittarii and Position angle · See more »
PPM Star Catalogue
The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue.
New!!: Eta Sagittarii and PPM Star Catalogue · See more »
Proper motion
Proper motion is the astronomical measure of the observed changes in the apparent places of stars or other celestial objects in the sky, as seen from the center of mass of the Solar System, compared to the abstract background of the more distant stars.
New!!: Eta Sagittarii and Proper motion · See more »
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
New!!: Eta Sagittarii and Red giant · See more »
Sagittarius (constellation)
Sagittarius is one of the constellations of the zodiac.
New!!: Eta Sagittarii and Sagittarius (constellation) · See more »
Sherburne Wesley Burnham
Sherburne Wesley Burnham (December 12, 1838 – March 11, 1921) was an American astronomer.
New!!: Eta Sagittarii and Sherburne Wesley Burnham · See more »
Slow irregular variable
A slow irregular variable (ascribed the GCVS types L, LB and LC) is a variable star that exhibit no or very poorly defined periodicity in their slowly changing light emissions.
New!!: Eta Sagittarii and Slow irregular variable · See more »
Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
New!!: Eta Sagittarii and Smithsonian Astrophysical Observatory Star Catalog · See more »
Solar radius
Solar radius is a unit of distance used to express the size of stars in astronomy.
New!!: Eta Sagittarii and Solar radius · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: Eta Sagittarii and Stellar classification · See more »
Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
New!!: Eta Sagittarii and Stellar evolution · See more »
University of Illinois at Urbana–Champaign
The University of Illinois Urbana–Champaign (also known as U of I, Illinois, or colloquially as the University of Illinois or UIUC) is a public research university in the U.S. state of Illinois and the flagship institution of the University of Illinois System.
New!!: Eta Sagittarii and University of Illinois at Urbana–Champaign · See more »
Warida
Warida or Al Warida is an asterism of the Arabs.
New!!: Eta Sagittarii and Warida · See more »
Washington Double Star Catalog
The Washington Double Star Catalog, or WDS, is a catalog of double stars, maintained at the United States Naval Observatory.
New!!: Eta Sagittarii and Washington Double Star Catalog · See more »
Winnowing Basket (Chinese constellation)
The Winnowing Basket mansion (箕宿, pinyin: Jī Xiù) is one of the Twenty-Eight Mansions of the Chinese constellations.
New!!: Eta Sagittarii and Winnowing Basket (Chinese constellation) · See more »
Zodiac
The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year.
New!!: Eta Sagittarii and Zodiac · See more »
Redirects here:
References
[1] https://en.wikipedia.org/wiki/Eta_Sagittarii
