Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page 62
... right ascension of a heavenly body is the arc of the equinoctial included between a certain point in that circle called the Vernal Equinox , and the point in the same circle to which it is referred by the circle of declination passing ...
... right ascension of a heavenly body is the arc of the equinoctial included between a certain point in that circle called the Vernal Equinox , and the point in the same circle to which it is referred by the circle of declination passing ...
Page 63
... right ascensions of celestial objects are always reckoned eastwards from the ... ascension of an ob- ject , if converted into time at the same rate ( since ... proper situations relative to each other , and to the poles TERMINOLOGY . 63.
... right ascensions of celestial objects are always reckoned eastwards from the ... ascension of an ob- ject , if converted into time at the same rate ( since ... proper situations relative to each other , and to the poles TERMINOLOGY . 63.
Page 64
... right ascension ) to represent those arcs in the heavens which correspond to latitudes and longi- tudes on the earth . It is for this reason that they term the equator of the heavens the equinoctial ; that what are me- ridians on the ...
... right ascension ) to represent those arcs in the heavens which correspond to latitudes and longi- tudes on the earth . It is for this reason that they term the equator of the heavens the equinoctial ; that what are me- ridians on the ...
Page 65
... right ascension , T S the declination , and P S the polar distance of any star or F TERMINOLOGY . 65.
... right ascension , T S the declination , and P S the polar distance of any star or F TERMINOLOGY . 65.
Page 72
... right ascension and polar distance . The star rises when apparently on the horizon , or really about 34 ' below it ( owing to refrac- tion ) , so that , at the moment of its apparent rising , its zenith * In the practical discussion of ...
... right ascension and polar distance . The star rises when apparently on the horizon , or really about 34 ' below it ( owing to refrac- tion ) , so that , at the moment of its apparent rising , its zenith * In the practical discussion of ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical axis bright calculation celestial centre circle comet curve degree described diameter difference direction disc distance disturbing body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination increase inequality instance interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian micrometrical moon moon's motion nearly nebula node normal force nutation object observed orbit parallax perigee perihelion period perturbations planet planetary pole portion position Post 8vo precession proper motion proportion recede recess refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith