equatorial coordinates वाक्य
उदाहरण वाक्य
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- The concept of right ascension has been known at least as far back as Hipparchus who measured stars in equatorial coordinates in the 2nd century BC . But Hipparchus and his successors made their star catalogs in ecliptic coordinates, and the use of RA was limited to special cases.
- :Quoting from the equatorial coordinate system article " . . . these motions necessitate the specification of the equinox of a particular date, known as an epoch, when giving a position . " The current International Celestial Reference Frame standard specifies the equinox of J2000.0.
- The observer position vector ( in Equatorial Coordinate System ) of the observation points can be determined from the latitude and local sidereal time ( from Topocentric Coordinate System ) at the surface of the focal body of the orbiting body ( e . g ., Earth ) via either:
- In the ecliptic coordinate system, latitude ( ? ) and longitude ( ? ); in the horizon system, altitude ( Alt ) and azimuth ( Az ); and in the equatorial coordinate system, declination ( ? ), are all measured in degrees, arcminutes and arcseconds.
- Bird Island is located between the extreme equatorial coordinates of 106 ?28'34 " west longitude and 23 ?15'25 " north latitude; its area is about 0.4 square kilometers, 1.1 kilometers long, and maximum and minimum range of 800 650 meters respectively.
- The use of the zodiac as a means to determine astronomical measurement remained the main method for defining celestial positions by Western astronomers until the Renaissance, at which time preference moved to the equatorial coordinate system, which measures astronomical positions by right ascension and declination rather than the ecliptic-based definitions of celestial longitude and celestial latitude.
- :\ hat { g } \, and \ hat { h } \, are the base vectors of the rectangular coordinate system in the plane of the reference Kepler orbit with \ hat { g } \, in the equatorial plane towards the ascending node and u \, is the polar argument relative this equatorial coordinate system
- On the subject of the usage of the armillary sphere in India, Lhashi ( 2008 ) writes : " The Indian armillary sphere ( " gola-yantra " ) was based on equatorial coordinates, unlike the Greek armillary sphere, which was based on ecliptical coordinates, although the Indian armillary sphere also had an ecliptical hoop.
- In the celestial equatorial coordinate system ? ( ?, ? ) in astronomy, "'polar distance "'( "'PD "') is an angular distance of a celestial object on its meridian measured from the celestial pole, similar to the way declination ( dec, ? ) is measured from the celestial equator.
- Astronomical latitude is not to be confused with declination, the coordinate astronomers use in a similar way to specify the angular position of stars north / south of the celestial equator ( see equatorial coordinates ), nor with ecliptic latitude, the coordinate that astronomers use to specify the angular position of stars north / south of the ecliptic ( see ecliptic coordinates ).
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