 | John Mason Good - 1813 - 904 pages
...forms the department of Dordogne. PERIGORD STONE. In mineralogy. See MAGNESIUM. PERIHELION, PERIKELICM, that point in the orbit of a planet or comet which is PER nearest to the sun. In which sense it stand* opposed to Aphelion, or Aphelium, which it the highest... | |
 | Charles Hutton - 1815 - 686 pages
...orbit, where the centre of its epicycle is at the least distance from the earth. PERIHELION, PEIUHELIUM, that point in the orbit of a planet or comet which is nearest to the sun. In which sense it stands opposed to aphelion, or aphelium, 137438091328 2305843008... | |
 | Alexander Jamieson - 1829 - 654 pages
...to the moon, comets, &c. to denote their nearest approach to our planet. PERIHELION, or PERIHELIUM, that point in the orbit of a planet, or comet, which is nearest to the sun ; being the extremity of their transverse axis, nearest to that focus in which the... | |
 | Francis Lieber, Edward Wigglesworth - 1832 - 656 pages
...Italy to Austria, and Poland to Russia. PERIGEE, or PERIQECM. (See Apog"-) PERIHELION, or PERIHELIDM ; that point in the orbit of a planet, or comet, which is nearest to the sun ; being the extremity of its transverse axis, nearest to that focus in which the... | |
 | Francis Lieber, Edward Wigglesworth, Thomas Gamaliel Bradford - 1832 - 708 pages
...to Austria, and Poland to Russia. PERIGEE, or PERIGEUM. (See Apo£"•) PERIHELION, or PERIHELIUM ; that point in the orbit of a planet, or comet, which is nearest to the sun ; being the extremity of its transverse axis, nearest to that focus in which the... | |
 | John Williams (of Lancaster, O.) - 1860 - 410 pages
...the orbit of a planet, or comet, which is nearest to the sun. (iripi [peri], near to.) Aphelion, the point in the orbit of a planet, or comet, which is farthest from the sun. (*эт [apo], remote from.) Parhelion, a mock-sun. See Art, Light. 3. Of the Stars. A STAR is an apparently... | |
 | Richard Anthony Proctor - 1865 - 302 pages
...plainly pass over thia arc more rapidly when near perihelion than when near aphelion. Aphelion.—The point in the orbit of a planet or comet which is farthest from the sun. Aposaturninm.—The point in a satellite's orbit farthest from Saturn. Apparent Motion.—The motion... | |
 | Richard Anthony Proctor - 1865 - 312 pages
...Hence the plane of a Declination-parallel is parallel to the plane of the equator. Perihelion. — That point in the orbit of a planet or comet which is nearest to the sun. Period, or Periodic Time. — See Revolution. Perisaturnium. — The point in a... | |
 | William Henry Smyth - 1867 - 836 pages
...diameter of the object-glass. APEX. The summit or vertex of anything; as the upper point of a triangle. APHELION. That point in the orbit of a planet or comet which is most remote from the sun, and at which the angular motion is slowest; being the end of the greater... | |
 | P. Austin Nuttall - 1869 - 356 pages
...mineralogy, a variety of the hornblende. Aphelion (Gr. apo, and helios the sun), in astronomy, that point of the orbit of a planet or comet which is farthest from the sun. Aphel'ion, a bright star in the constellation Gemini. Aph'ides, Aphid'ii (Gr. aphis the plant' louse.... | |
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That point in the orbit of a planet or comet which is farthest from the sun Apogee - That point in the orbit of an earth satellite which is farthest from the earth Apsides (sing. 
