Azimuth of the luminary. Countdown by the clock. Countdown to horizontal circle
(from the Arabic word assum û t, i.e. path, road) - is the angle formed by the meridian plane with the vertical plane passing through this luminary, and measured by the arc of the horizon, which is contained between these two planes. The azimuth is eastern and western, depending on whether the given star is located east or west of the meridian, and is equal to zero when it is on the meridian (southern) or at its highest, culminating point. In astronomy, the azimuth of a star is generally considered to be from 0° to 360°, so that the distinction between eastern and western azimuth becomes unnecessary.
- - the angle between the direction of the terrain line and the meridian passing through a given point. The value of A. is counted from the north. the end of the meridian - clockwise along this line and can vary from 0° to 360°...
Agricultural dictionary-reference book
- - manual , lp Koltukana Prav. In Selemdzhinsky...
Toponymic Dictionary of the Amur Region
- - the angle between the plane of the meridian of the observation point and the vertical plane passing through this point and the observed luminary, object, etc. Counted from point Yu to ...
Astronomical Dictionary
- - direction: ஐ "First - to LT-8, prepare lasers, target - cloud, low power, to billierg at the epicenter, continuous fire in azimuth!" -...
Lem's World - Dictionary and Guide
- - celestial body, the dihedral angle between the meridian plane of the observation point and the vertical plane passing through this point and the observed object. Depending on the type of meridian from which it is produced...
Glossary of military terms
- - M. Astronomer. close the arc, see, between the midday and the plumb line. Azimuthal, azimuth, related to azimuth. Azimuth sundial, reclining, level, not wall-mounted...
Modern encyclopedia
- - azimuth is the angle between the meridian plane of the observation point and the vertical plane passing through this point and the observed object...
Geographical encyclopedia
- - object, direction, angle between the meridian plane of the observation point and the vertical. plane passing through this point and the observed object. Counted from N. or S. clockwise from 0 to 360°...
Natural science. encyclopedic Dictionary
- - the horizontal angle between the meridian plane of the observation point and the vertical plane passing through this point and the observed object - azimuth - azimut - Azimut - azimut - zovkhis chig - azymut - azimut - azimut - acimut - azimuth -...
Construction dictionary
- - - dihedral angle between the meridian plane of the observation point and the vertical plane passing in a given direction, measured from the direction C. clockwise...
Geological encyclopedia
- - a celestial body, an earthly object, etc. - a dihedral angle between the meridian plane of the observation point and the vertical. a plane passing through this point and the observed luminary, object, etc...
Big Encyclopedic Polytechnic Dictionary
- - luminary - spherical angle at zenith between the vertical of the luminary and the meridian of the observer...
Marine dictionary
- - a luminary is the angle formed by the plane of the meridian with the vertical plane passing through this luminary, and measured by the arc of the horizon, which is contained between these two planes...
- - is the angle formed by the plane of the meridian with the vertical plane passing through this luminary, and measured by the arc of the horizon, which is contained between these two planes...
Encyclopedic Dictionary of Brockhaus and Euphron
- - object, direction, angle between the meridian plane of the observation point and the vertical plane passing through this point and the observed object. Counted from north or south clockwise from 0 to 360....
Large encyclopedic dictionary
- - ...
Spelling dictionary of the Russian language
"Azimuth of the Sun" in books
Azimuth – know!
author Loza Dmitry FedorovichAzimuth – know! In January 1945 there were fierce round-the-clock battles with an encircled enemy group in the Hungarian capital. The enemy made three desperate attempts to release his troops trapped in the “cauldron.” On January 2 they were inflicted
His Majesty Azimuth
From the book Tanker in a Foreign Car. Defeated Germany, defeated Japan author Loza Dmitry FedorovichTHE SUN AND THE LIGHTS
From the book Life Itself authorTHE SUN AND THE LIGHTS A Quarter of a Century We met Father Alexander in the summer of 1965 (I don’t remember the month). Mikhail Agursky, then called Melik, brought me to him. I lived in Lithuania, I had just arrived in Moscow, and those whom I did not have time to visit were mostly middle-aged
Sun and luminaries
From the book Life Itself author Trauberg Natalya LeonidovnaSun and luminaries One more thing: there is no such thing as hope, There is something more than hope. Thomas Venclova
Azimuth - know!
author Loza Dmitry FedorovichAzimuth - know! In January 1945 there were fierce round-the-clock battles with an encircled enemy group in the Hungarian capital. The enemy made three desperate attempts to release his troops trapped in the “cauldron.” On January 2 they were inflicted
His Majesty Azimuth
From the book Tanker in a Foreign Car. They defeated Germany and defeated Japan. author Loza Dmitry FedorovichHis Majesty Azimuth Brigade units are ready for battle. The Shermans are fully equipped with crews that have been fired upon in the west. However, the little experience of moving in azimuth with the help of a gyrocompass, which we acquired in the west, was not enough for reliable
Chapter Four Azimuth - to the West
From the book The Wind of the War Years author Baklanov Gleb VladimirovichChapter Four Azimuth - to the West The crossing was calm: on the right bank of the Dnieper, formations of the 7th Guards Army of General Shumilov and the 5th Guards Tank Army of General Rotmistrov had already held a bridgehead for several days, stretching along the river for kilometers
Luminaries
From the book The Magic of the Name. Cosmic discovery codes author Estrin AnatolyLuminaries of the Sun The central place in our planetary system is occupied by the Sun. It is this that gives life to all planets, shows them the path - the trajectory of movement in orbits, establishes and regulates the cosmic and biological rhythms of the existence of all forms of life. The Sun
Luminaries
by Baggott JimLuminaries
From the book The Secret History of the Atomic Bomb by Baggott JimLuminaries In the spring of 1942, the S-1 program was gaining momentum, and Teller could only wait for the weather by the sea. Szilard, extremely outraged by Compton's undemocratic decision to concentrate research in Chicago, nevertheless packed his bags and moved there at the end of January 1942
Azimuth
From the book Great Soviet Encyclopedia (AZ) by the author TSBLaplace azimuth
From the book Great Soviet Encyclopedia (LA) by the author TSBA.G. Larionov, E.A. Orel Experience in analyzing social networks of organizations using the Azimuth technique
From the book Psychological problems of modern business: a collection of scientific articles author Ivanova Natalya LvovnaA.G. Larionov, E.A. Orel Experience in analyzing social networks of organizations using the Azimuth technique As competition grows in global markets, the rapid development of computer technology and, as a consequence, the need to ensure investment attractiveness in
The birth of a luminary
From the book Psychology day by day. Events and lessons author Stepanov Sergey SergeevichThe birth of a luminary Every year at the beginning of May, the psychoanalytic community more or less magnificently (depending on the roundness of the date) celebrates the birthday of the one who for many years provided this community with the meaning of existence and a piece of rich bread. May 6th – birthday
True azimuth and magnetic azimuth
From the book ABC of Tourism author Bardin Kirill VasilievichTrue azimuth and magnetic azimuth To complete the consideration of issues related to orientation, it is necessary to consider one more issue. In the previous presentation, we assumed that the direction north shown on the map and the direction north determined
Azimuth (astronomy)
Notes
Links
- // Encyclopedic Dictionary of Brockhaus and Efron: In 86 volumes (82 volumes and 4 additional ones). - St. Petersburg. , 1890-1907.
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2010.
See what “Azimuth (astronomy)” is in other dictionaries:
Azimuth: Wiktionary has an article “azimuth” Azimuth (geodesy) in geodesy, the angle between the direction north (in the Southern Hemisphere south) and the direction ... Wikipedia
Astronomy of the Islamic Middle Ages astronomical knowledge and views widespread in the Middle Ages in the Arab Caliphate and in the states that arose from its ruins, that is, in the territory of the Middle and Near East, a significant part of ... ... Wikipedia
A branch of practical astronomy (See Practical Astronomy), most closely related to geodesy and cartography; studies the theory and methods of determining the latitude φ and longitude λ of a place, as well as the azimuth and direction of an earthly object and local... ...
Teaches how to most appropriately locate, make and process observations with astronomical instruments necessary to solve one or another problem in astronomy. An essential part of it is the theory of instruments (about this see... ... A section of astrometry (See Astrometry), devoted to the study of astronomical instruments and methods of determining time, geographic coordinates and azimuth directions from astronomical observations. Depending on the conditions in which... ...
A branch of practical astronomy (See Practical Astronomy), satisfying the needs of navigation. The subject of M. a. is the development of methods for determining by celestial bodies and navigation artificial satellites of the Earth (see... ... A section of astrometry (See Astrometry), devoted to the study of astronomical instruments and methods of determining time, geographic coordinates and azimuth directions from astronomical observations. Depending on the conditions in which... ...
This term has other meanings, see Climax. Climax (astronomy) is the moment when a star passes through the celestial meridian during its daily movement. Otherwise: the moments when the luminary passes the points of intersection of the daily... ... Wikipedia
There is that department of practical astronomy, which sets out methods for determining the position of a ship at sea and correcting the compass using astronomical observations. The place of a ship at sea is determined by its latitude and longitude, calculated from some... ... Encyclopedic Dictionary F.A. Brockhaus and I.A. Efron
A branch of astrometry that develops mathematical methods for solving problems related to the study of the apparent location and movement of luminaries (stars, Sun, Moon, planets, artificial celestial bodies, etc.) on the celestial sphere. Widely used in... A section of astrometry (See Astrometry), devoted to the study of astronomical instruments and methods of determining time, geographic coordinates and azimuth directions from astronomical observations. Depending on the conditions in which... ...
Persian astrolabe of the 18th century Astrolabe (Greek ... Wikipedia
Horizontal coordinate system. The main planes from which coordinates are measured in this system are the observer's meridian and the plane of the true horizon. The horizontal coordinate system includes the height of the luminary h and azimuth A.
The height of the luminary h is the angle (KOo) between the plane of the true horizon and the direction from the center of the celestial sphere to the center of the luminary (Fig. 73). The height of the luminary is measured by a vertical arc from the true horizon to the center of the luminary (Ko) in the range from O to 90°. Altitude is assigned a plus sign if the luminary is above the horizon, and a minus sign if it is located below the horizon. In the latter case, the height is called decline.
Rice. 73.
Instead of height, sometimes they use the zenith distance z, which is the addition of the height to 90°, i.e. z = 90°-h; it is measured by a vertical arc from the zenith to the center of the luminary in the range from 0 to 180°.
To determine the location of the luminary, it is also necessary to determine the position of the vertical passing through it. The vertical position determines the azimuth.
Azimuth- this is the spherical angle at zenith, enclosed between the meridian of the observer and the vertical of the luminary; measured by the arc of the true horizon from one of the observer's meridian points. The observer's meridian point is chosen in accordance with practical necessity and convenience in calculations. In nautical astronomy, three systems for calculating azimuth are accepted: circular, semicircular and quarter.
In a circular calculation, the azimuth is measured by the arc of the true horizon from point N towards O st to the vertical of the luminary in the range from O to 360° and is written as follows: A = 120° (arc NO st K, Fig. 73).
With semicircular counting, azimuth is measured by the arc of the true horizon from the midnight part of the observer's meridian towards the east or west to the vertical of the luminary in the range from 0 to 180°.
The semicircular azimuth is written: A = N120°O st (arc NO st K). The first letter is always the same as the latitude, since the name of the midnight part of the observer's meridian is determined by the name of the elevated pole. The second letter is determined by the location of the star in the eastern or western hemisphere.
Rice. 74.
When counting quarterly, the azimuth is measured by the arc of the true horizon from the north point N or from the south point S towards the east or west to the vertical of the luminary in the range from 0 to 90° and write A = 60°SO (arc SK).
Due to the rotation of the Earth, the altitude and azimuth of the star are constantly changing.
On a ship, the height of the luminary is measured with a sextant, and the azimuth can be approximately determined using a compass or calculated using the formulas of spherical trigonometry.
Equatorial coordinate system. There are two systems of equatorial coordinates. The main planes in the first equatorial system are the observer's meridian and the plane of the celestial equator. The coordinates in this system will be hour angle t and declination 6.
Hour angle called the spherical angle at an elevated pole, enclosed between the noon part of the observer’s meridian and the circle of declination of the star (QPNK, Fig. 74). Two systems for counting hour angles have been adopted.
The ordinary hour angle is measured by the arc of the celestial equator from the midday part of the observer's meridian towards the west to the circle of declination of the star in the range from 0 to 360°. In Fig. 74 arc QWQ" O st K and t~310°.
The practical hour angle is measured by the arc of the celestial equator from the midday part of the observer's meridian towards the west or east to the circle of declination of the star in the range from 0 to 180° (arc QK). The practical hour angle is always given the name Ost or W, for example t~50°O st.
Declination of the luminary b they call the angle between the plane of the celestial equator and the direction from the center of the celestial sphere to the center of the body KOo.
Declination is measured by the arc of the declination circle from the celestial equator to the center of the star, ranging from 0 to 90°. The declination is assigned the letter N if the luminary is in the northern hemisphere, and S if it is in the southern hemisphere: for example, b = 40°N (see Fig. 74).
When calculating, the declination is assigned a “plus” sign if it is the same as the latitude, and a “minus” sign if it is different. Instead of declension, they are sometimes considered polar distance A, which is the complement of declination to 90°, i.e. A = 90°-b. The polar distance is measured by the arc of the declination circle from the elevated pole to the center of the star in the range from 0 to 180°.
As the Earth rotates, the declination remains unchanged throughout the day, but the hour angle changes.
The second coordinate system includes right ascension a and declination b (or polar distance A).
On the celestial equator there is a conditional fixed point called the Aries T point. Right ascension a is measured by the arc of the celestial equator from the Aries T point to the circle of declination of the star in the direction opposite to the calculation of ordinary hour angles, ranging from 0 to 360 °.
The concepts of declination and polar distance are the same as in the first equatorial coordinate system. The rotation of the Earth does not cause changes in the values of right ascension and declination, therefore these coordinates are used to compile star maps and star catalogs (Appendix 6).
