 IV. The ecliptic and its pole may be taken as the standards of reference. The co-ordinates of the star are then called its latitude and its longitude. The Latitude of a star is its angular distance from the ecliptic measured on a circle of latitude. The...  The Elements of the Theory of Astronomy - Page 16by John Hymers - 1840 - 354 pagesFull view - About this book
 | 1834 - 578 pages
...ecliptic, the arc of this circle between the bod/ and the ecliptic Is called the latitude of the body, and the arc of the ecliptic intercepted between the first point of Aries, and the intersection of the secondary with the ecliptic, is called the longitude of the body. The place... | |
 | John William Draper - Physics - 1847 - 414 pages
...place taken as a standard. The observatory of Greenwich is the standard position very commonly assumed. The longitude of a star is the arc of the ecliptic intercepted between that star and the first point of Aries. '. . • The latitude of a star is its. distance from the ecliptic,... | |
 | François Arago - Astronomy - 1848 - 108 pages
...by two meridians measured by the arc of the equator, or of its parallels intercepted between them. The longitude of a star is the arc of the ecliptic intercepted between the star and the first point of Aries. Terrestrial latitude is the distance of a place from the equator,... | |
 | James Inman - Nautical astronomy - 1849 - 302 pages
...celestial concave, intercepted between this place and the ecliptic. The longitude of a heavenly body is the arc of the ecliptic intercepted between the first point of Aries and the circle of latitude passing through the place of the body — measuring on the ecliptic from west... | |
 | John William Norie - Nautical astronomy - 1852 - 844 pages
...according as the object is north or south of the ecliptic. The longitude of a celestial body is an arch of the ecliptic, intercepted between the first point of Aries and a circle of longitude passing through the centre of the object. The tropics are two lesser circles parallel... | |
 | Charles Joseph Riches - 1854 - 64 pages
...place. In England the first meridian passes through Greenwich. The longitude of a celestial body is an arc of the ecliptic intercepted between the first point of Aries and a circle of longitude passing through the centre of the object. Q. What is prime vertical ? A. A vertical... | |
 | John Bradley Harbord - Astronomy - 1865 - 52 pages
...circle of declination passing through the body, reckoning eastward. (2.) Longitude of a Heavenly Body: The arc of the ecliptic intercepted between the first point of Aries and the circle of latitude passing through the body, reckoning eastward. (3.) Azimuth of a Heavenly Body:... | |
 | Henry William Jeans - 1868 - 228 pages
...celestial concave, intercepted between that place and the ecliptic. 31. The longitude of a heavenly body is the arc of the ecliptic intercepted between the first point of Aries and the circle of latitude passing through the place of the heavenly body in the celestial concave, measuring... | |
 | Henry William Jeans - 1870 - 288 pages
...celestial concave, intercepted between that place and the ecliptic. (55.) The longitude of a heavenly body is the arc of the ecliptic intercepted between the first point of Aries and the circle of latitude passing through the place of the heavenly body in the celestial concave, measuring... | |
 | James Inman - 1872 - 818 pages
...celestial concave, intercepted between this place and the ecliptic. The longitude of a heavenly body is the arc of the ecliptic intercepted between the first point of Aries and the circle of latitude passing through the place of the body — measuring on the ecliptic from west... | |
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