Zenith

Zenith Related Category: Astronomy: General in astronomy, the point in the sky directly overhead; more precisely, it is the point at which the celestial sphere is intersected by an upward extension of a plumb line from the observer's location.

Zenith distance. Astron. See under Distance. -- Zenith sector. Astron. See Sector, 3.

Zenith For other uses, see Zenith (disambiguation).In broad terms, the zenith is the direction pointing directly above a particular location.

Zenith is also used for the highest point reached by a celestial body during its apparent orbit around a given point of observation.

Zenith From LoveToKnow 1911 ZENITH (from the Arabic), the point directly overhead; its direction is defined by that of the plumb-line.

Zenith Angle The angle from the outward normal of the to the object being observed. , , ...

Definition: zenith: The point on the sky directly above the observer. Space Tragedies9 Planets in Nine DaysAstronomy 101 Related Articles ...

Zenith Distance Angular distance on the celestial sphere measured along the great circle from the zenith to the celestial object. Zenith distance is 90° minus altitude. Zeolite ...

zenith point on the celestial sphere that is always directly above the observer regardless of his/her location. zodiac narrow belt of twleve constellation centered on the ecliptic.

Zenith: The point directly overhead, as determined by the indefinitie upward extension of a plumb line.

zenith The point on the sky directly above the observer. zero-age main sequence (ZAMS) ...

ZENITH An observer's zenith is the point directly overhead. ZETA ORIONIS Zeta Orionis (Alnitak) is a star at the eastern end of Orion's belt (in the constellation Orion). Alnitak means belt. Alnitak is spectral Type O9.7Ib.

Zenith The point directly overhead (90° in altitude). Zenith Hourly Rate A general guide to the expected intensity of any given meteor shower. It is a theoretical rate, assuming a radiant at the zenith with a sky limiting magnitude of 6.5.

Zenith The point on the celestial sphere that is directly above the observer. Holding a balloon overhead places the balloon at your zenith.

Zenith The sky directly overhead. An object 'transits' when its line of right ascension crosses the zenith. Author: Dennis Bishop ...

Zenith eclipse Parnell successfully exposed a devious Conservative intrigue to associate him and his party with crime and violence through forged "Pigott Papers" from which he was vindicated in February 1890.

Zenith- the point on the celestial sphere directly overhead Zodiac- the twelve constellations straddling the ecliptic through which the sun, Moon, and planets appear to move during the year ...

Zenith A point directly overhead from an observer. Zodiac An imaginary belt across the sky in which the Sun, Moon, and all of the planets can always be found.

Zenith Point in the Sky that is directly overhead. Zero-Age Main Sequence (ZAMS) ...

Zenith. The point on the celestial sphere that lies directly overhead an observer, exactly 90 degrees away from every part of the observer's horizon. Zenith distance. The angular distance of an object from the zenith.

zenith -- the point on the celestial sphere that lies directly overhead at your location. zodiac -- a band running around the celestial sphere in which the planets move.

Zenith - The point on the celestial sphere directly above an observer Zero Point - The point from which the coordinates in a coordinate system are measured.

zenith distance (or zenith angle): [z] the complement of the altitude i.e. (90º - a) ...

The name "Zenith Star" derives from the fact that star moves through the zenith at the latitude of the Royal Observatory in Greenwich, England. Description of the Star ...

At about the zenith in winter sky, a trio of open clusters is bathed in the faint Milky Way of Auriga. They are paralleled M37 (NGC2099), M36 (NGC1960), and M38 (NGC1912) from east to west.

Airy's Reflex Zenith Tube Sunshine Recorder, circa 1876. ©National Maritime Museum, Greenwich, London This telescope was invented by Airy in 1851 to observe the positions of stars that pass almost vertically overhead.

Located at the zenith point of P3 is a Clan Wolf controlled orbital cargo transfer station. Armory List Name ...

eyepiece height at zenith: 78" (no ladder needed - just a step stool) total weight (without wheelbarrow handles): 192 lbs (87.2 kg) portability: long distance - fits inside Ford Escort stationwagon with room to spare (left image below) ...

Angular distance north or south of the prime vertical; the arc of the horizon, or the angle at the zenith between the prime vertical and a vertical circle, measured north or south from the prime vertical to the vertical circle.

celestial horizon That great circle of the celestial sphere formed by the intersection of the celestial sphere and a plane through the center of the earth and perpendicular to the zenith-nadir line. Also called rational horizon.

Absolute magnitude The stellar magnitude any meteor would have if placed in the observer's zenith at a height of 100 km. Aphelion distance Abbreviation Q, distance of greatest heliocentric separation for a body in an eccentric orbit; Q=a(1+e).

If you were standing on Earth's equator, the celestial equator would extend from eastern horizon, directly over your head (zenith), then to the western horizon.

Eltanin's high northerly position also takes it nearly through the zenith, the point overhead, as seen from London, causing it to acquire the now obscure name "zenith star." As a result the star was heavily studied.

A lunar standstill is just like a solar solstice, except that it refers to the northernmost and southernmost points of the zenith Moon over the globe of Earth.

Indeed, the roughly three centuries from the Scientific Revolution through the beginning of the modern era of solar system probes were essentially the zenith for belief in extraterrestrials in the West.

"We sailed on night after night, the weather growing colder and colder, and the North Star climbing towards the zenith.

On October 23, 1975, this spacecraft was separated from the Orbiter, and landing was made with the sun near zenith, at 0517 UT, on October 25, 1975. A system of circulating fluid was used to distribute the heat load.

Remember, straight above your head (the zenith) is 90 degrees above the horizon. This object is NGC1582. It is over 1/2 of a degree across, and magnitude 7. 1/2 degree north and 3 1/2 degrees closer to the horizon brings us to NGC1664.

" Arcturus is the Zenith Star of the Hawaiian Islands. Using Hokule'a and other stars, the Polynesians launched their double-hulled canoes from Tahiti and the Marquesas Islands.

(a) Theoretical north-south line on the Earth's surface, or an extension of that line onto the night sky, connecting the observer's zenith with the celestial pole and the horizon. The meridian is used to state directional bearings.

The point on the celestial sphere directly overhead for an observer is the zenith. An imaginary arc passing through the celestial poles and through the zenith is called the observer's meridian.

Given that the radiant is low in the north-east, observers will need a site with a dark sky to the north and east and from there up to the zenith. Almost all the meteors will be observed some distance from the radiant point.

It increases from the zenith to the horizon and affects short wavelengths more than long wavelengths, so that objects near the horizon appear redder than they do at the zenith. The brightness of a star in the zenith will be reduced by only about 0.

The angle from (say) the eastern to western horizon (through the point directly overhead, the zenith) is 180 degrees.

altazimuth coordinate system or horizon coordinate system, astronomical coordinate system in which the position of a body on the celestial sphere is described relative to an observer's celestial horizon and zenith.

Kapp and Guynn challenge leading theories, which suggest Tibet reached its zenith 8 million years ago and has been slowly deflating as it spreads out over India.

To the far left is a vertical zenith sighting tube, and to the left is the structure that allows access to its other end under ground. Careful observation would have set the time to minute or so.

Refractors mounted on tripods can be comfortable to use while sitting in a chair if the object you are viewing is not near the horizon or zenith.

Can often be seen near the zenith in the mid-northern latitudes during the Northern Hemisphere summer. In about AD 14,000, Vega will become the North Star, owing to the 26,000 year precession of the equinoxes.

an imaginary circle on the celestial sphere that connects the zenith to the north (or south) celestial Messier objects the 107 bright deep-sky objects that belong to a catalog compiled by French astronomer Charles Messier in the 1700s ...

I shall quote Professor Hartner's descriptive words: "The constellation Leo would have been directly overhead, standing at zenith and displaying thereby its maximum power [as it] kills and destroys the Bull trying to escape below the horizon, ...

At some longitudes the observer would see the Sun rise and then gradually increase in apparent size as it slowly moved toward the zenith.

Etanin; Ettanin; Rastaban; Rasaben; Zenith Star. Gamma Draconis HR 6705 HD 164058 ...

VISUAL LIMITING MAGNITUDE The visual limiting magnitude is the magnitude of the dimmest star that you can see by the zenith (overhead). Star Visual (Absolute) Magnitude Apparent Magnitude Distance from Earth (light-years) The Sun ...

Short name for the National Astronomy and Ionospheric Center (NAIC) at Arecibo, Puerto Rico; often refers only to the NAIC 1000-ft (305-m) zenith (䔸°) antenna, the world's largest radio astronomy collector. asteroid - (n.) ...

If an object is on the horizon, its altitude is 0 degrees. If it is at the observer's zenith, its altitude os 90 degrees. To find an object in the sky, two coordinates are needed, its and its altitude.

The point on the celestial sphere directly below the observer. The opposite of the zenith. naked singularity A singularity that is not hidden behind an event horizon.

The meaning of all this is that if you're planning to observe objects at the limit of your telescope's light-gathering ability, you should observe them when they are as close to the Zenith as possible.

is from an Old English word for the "ninth watch") was set simply as the time when the Sun was at its highest point in the sky. Somtimes a small hole in the local church roof would be used to determine exactly when the Sun had reached its zenith.

Currently the largest center for Jungism are the Young Jungs of the Abraxas habs (Sophic League habitats in mostly MPA space). Although their influence is greatly reduced since their CoEmp zenith, ...

See also: Earth, Time, Sky, Sun, Light