“The” New American Grammar Of The Elements Of Astronomy, On An Improved Plan: In Three Books. I. The Use Of The Terrestrial Globe In The Solution Of Geographical And Astronomical Problems II. The Use Of The Celestial Globe ... III. The Solar System, And The Firmament Of Fixed Stars ; The Whole Systematically Arranged and Scientifically Illustrated ; With Severeal Cuts And Engravings ; And Adapted To The Instruction Of Youth In Schools And AcademiesCollins And Hannay. No. 230 Pearl-street, 1831 - 375 pages |
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Page 240
... Aphelion and Perihelion are also applied to the Earth's orbit . 6. Apsis of an orbit is either its aphelion or pe- rihelion apogee or perigee ; and the straight line which joins the apsides , is called the line of the ap- sides . 7. The ...
... Aphelion and Perihelion are also applied to the Earth's orbit . 6. Apsis of an orbit is either its aphelion or pe- rihelion apogee or perigee ; and the straight line which joins the apsides , is called the line of the ap- sides . 7. The ...
Page 241
... aphelion , or apogee . 12. The mean anomaly is its angular distance from its aphelion , or apogee , if it had moved uni- formly with its mean angular velocity . In the tables of the Sun , Moon , and planets , the epochs have been ...
... aphelion , or apogee . 12. The mean anomaly is its angular distance from its aphelion , or apogee , if it had moved uni- formly with its mean angular velocity . In the tables of the Sun , Moon , and planets , the epochs have been ...
Page 242
... aphelion ; and the point B the lower apsis , or perihelion ; these two points vary , and their motion in a century is called the secular motion . The distance between the centre C and the sun , or focus S , is the eccentricity of the ...
... aphelion ; and the point B the lower apsis , or perihelion ; these two points vary , and their motion in a century is called the secular motion . The distance between the centre C and the sun , or focus S , is the eccentricity of the ...
Page 243
... aphelion has to its whole period , then is the angle ASP the measure of the planet's distance from the aphelion , at the time the planet is in P. This angle is also the true anomaly ; and the difference between the mean anomaly and the ...
... aphelion has to its whole period , then is the angle ASP the measure of the planet's distance from the aphelion , at the time the planet is in P. This angle is also the true anomaly ; and the difference between the mean anomaly and the ...
Page 247
... aphelion or higher apsis of a planet's orbit ? What is the perihelion or lower apsis of a planet's orbit ? When is the moon in apogee , and when is she in perigee ? What is the line of the apsides ? What is the eccentricity of the orbit ...
... aphelion or higher apsis of a planet's orbit ? What is the perihelion or lower apsis of a planet's orbit ? When is the moon in apogee , and when is she in perigee ? What is the line of the apsides ? What is the eccentricity of the orbit ...
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Common terms and phrases
American miles analemma angle aphelion apparent diameter appear Arcturus Aries astronomers axis azimuth body brazen meridian bring the given called celestial globe centre climate comet constellation days and nights difference diurnal motion earth east ecliptic equal equator equinoctial point equinox fixed stars given place globe westward greatest heavens heliacally hemisphere Hence Herschel horizon hour circle inferior conjunction inferior planets inhabitants Jupiter latitude length longest day longitude Mars mean distance Mercury meridian altitude minutes moon nearly New-York node noon north or south north pole number of degrees o'clock oblique observed orbit parallax parallel of latitude passing perihelion polar circles principal stars Prob quadrant of altitude Rectify the globe remarkable stars retrograde revolution right ascension rising and setting satellites Saturn set the index sidereal solar south pole sun's declination sun's place superior planet supposed surface telescope terrestrial globe tion tude turn the globe twilight Venus zenith zone