Outlines of Astronomy |
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Page xv
... comet , & c . , and a few numerical errors are corrected which have hitherto escaped notice and public comment as blemishes , —as for example , in some of the numbers in Art . 422. in the explanation of the phænomena of a lunar eclipse ...
... comet , & c . , and a few numerical errors are corrected which have hitherto escaped notice and public comment as blemishes , —as for example , in some of the numbers in Art . 422. in the explanation of the phænomena of a lunar eclipse ...
Page xvii
... most unexpected connection with periodic comets in some instances , presents the latter class of bodies under a new aspect , increasing , a if anything can increase , the mysterious interest which already PREFACE TO THE TENTH EDITION.
... most unexpected connection with periodic comets in some instances , presents the latter class of bodies under a new aspect , increasing , a if anything can increase , the mysterious interest which already PREFACE TO THE TENTH EDITION.
Page xxi
... Comet at its last Apparition . Fig . 2. Double Comet of Biela , as seen on its last return . Fig . 3. Messier's 51st Nebula as shown by Lord Rosse's great Reflector . PLATE A. Figures illustrative of the Perturbations of Uranus by Nep ...
... Comet at its last Apparition . Fig . 2. Double Comet of Biela , as seen on its last return . Fig . 3. Messier's 51st Nebula as shown by Lord Rosse's great Reflector . PLATE A. Figures illustrative of the Perturbations of Uranus by Nep ...
Page xxv
... comet . Comets with- out tails , or with more than one . Their extreme tenuity . Their probable structure . Motions conformable to the law of gravity . Actual dimensions of comets . Periodical return of several . Halley's comet . Other ...
... comet . Comets with- out tails , or with more than one . Their extreme tenuity . Their probable structure . Motions conformable to the law of gravity . Actual dimensions of comets . Periodical return of several . Halley's comet . Other ...
Page xxvi
... comet of 1843. Its probable identity with several older comets . Great interest at present attached to cometary astronomy , and its reasons . Remarks on cometary orbits in general . Great comets of 1858 , 1861 and 1862 PART II . · OF ...
... comet of 1843. Its probable identity with several older comets . Great interest at present attached to cometary astronomy , and its reasons . Remarks on cometary orbits in general . Great comets of 1858 , 1861 and 1862 PART II . · OF ...
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amount angle angular appear apsides ascertained astronomical atmosphere attraction axis bright calculation celestial circle coincidence comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian micrometrical moon moon's nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations phænomena phænomenon planet planetary pole portion position precession precisely proper motion proportion recede recess refraction remarkable respect result revolution revolving right ascension rotation round satellites Saturn seen sidereal sidereal day situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible whole zenith