Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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              <pb o="581" file="0317" n="334" rhead="SYSTEMA SATURNIUM."/>
            Febr. </s>
            <s xml:id="echoid-s6645" xml:space="preserve">1643, unde non niſi rotunda forma prodire potuit,
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            ut antea demonſtratum eſt.</s>
            <s xml:id="echoid-s6646" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6647" xml:space="preserve">Idem quoque phænomenon anno 1627, proculdubio ſeſe
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            obtulit, ſed obſervatorum penuria an ſupinitate præteriit in-
              <lb/>
            obſervatum; </s>
            <s xml:id="echoid-s6648" xml:space="preserve">cum nemo, quod ſciam, prodiderit, utrum
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            Saturnus eo anno cum globulis apparuerit an ſecus.</s>
            <s xml:id="echoid-s6649" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6650" xml:space="preserve">Anno autem 1612, à Galilæo primo omnium rotunda fa-
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            cie animadverſus eſt. </s>
            <s xml:id="echoid-s6651" xml:space="preserve">Scribit is ad Marc. </s>
            <s xml:id="echoid-s6652" xml:space="preserve">Velſerum Epiſto-
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            la de Solaribus maculis 3. </s>
            <s xml:id="echoid-s6653" xml:space="preserve">circa ſolſtitium quidem illius an-
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            ni, tricorporem adhuc Saturnum ſibi viſum, inde verò, cum
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            duobus menſibus atque amplius teleſcopio eum inſpicere o-
              <lb/>
            miſiſſet, ut qui nullam formæ mutationem animo præſagi-
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            ret, poſtea nihil minus cogitanti ſolitarium oblatum, talem-
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            que deinceps in illam uſque diem, quæ prima Decembris
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            erat; </s>
            <s xml:id="echoid-s6654" xml:space="preserve">permanſiſle. </s>
            <s xml:id="echoid-s6655" xml:space="preserve">Quæ quidem obſervatio hactenus hypo-
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            theſi noſtræ conſentit, ut ſi eo tranſitu lineæ A C rotundus
              <lb/>
            apparere Saturnus debuerit, id hoc anno neque alio accide-
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            re fuerit neceſſe. </s>
            <s xml:id="echoid-s6656" xml:space="preserve">Sed cum per totum hunc annum Saturni
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            locus, quà apparens, quà eccentricus, ab eadem parte man-
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            ſerit loci æquinoctiorum, ſive ♓ gradus 20{1/2}; </s>
            <s xml:id="echoid-s6657" xml:space="preserve">videbatur ex
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            præcedentibus colligendum, ſalvis brachiis ſuis eum præter-
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            labi potuiſſe, quod tamen contra evenit. </s>
            <s xml:id="echoid-s6658" xml:space="preserve">Et ſexto quidem
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            Septembr. </s>
            <s xml:id="echoid-s6659" xml:space="preserve">dicti anni 1612, quo tempore jam rotundum Ga-
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            lilæus reperit, erat ejus locus ex Sole ſimul & </s>
            <s xml:id="echoid-s6660" xml:space="preserve">apparens, in
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            gr. </s>
            <s xml:id="echoid-s6661" xml:space="preserve">14, 44′ ♓. </s>
            <s xml:id="echoid-s6662" xml:space="preserve">Hoc eſt g.</s>
            <s xml:id="echoid-s6663" xml:space="preserve">5. </s>
            <s xml:id="echoid-s6664" xml:space="preserve">46′ citra locum æquinoctii ſui.
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            </s>
            <s xml:id="echoid-s6665" xml:space="preserve">Adeo ut ſolares radii atque ii qui à viſu terricolarum flue-
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            bant in eandem annuli Saturnii ſuperficiem inciderent: </s>
            <s xml:id="echoid-s6666" xml:space="preserve">non
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            tamen angulo g. </s>
            <s xml:id="echoid-s6667" xml:space="preserve">5. </s>
            <s xml:id="echoid-s6668" xml:space="preserve">46′ deſuper in planum ejus directi, ſed
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            gr. </s>
            <s xml:id="echoid-s6669" xml:space="preserve">2. </s>
            <s xml:id="echoid-s6670" xml:space="preserve">15′ duntaxat. </s>
            <s xml:id="echoid-s6671" xml:space="preserve">Hic enim elevationis angulus, ut hoc
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            obiter adnotemus, ſic ſe habet ad illum gr. </s>
            <s xml:id="echoid-s6672" xml:space="preserve">5. </s>
            <s xml:id="echoid-s6673" xml:space="preserve">46′, quo Pla-
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            netæ locus diſtat ab æquinoctio ſuo, quemadmodum apud
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            nos declinatio Solis ad ejuſdem ab æquinoctio diſtantiam. </s>
            <s xml:id="echoid-s6674" xml:space="preserve">
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            Quandoquidem non aliud reſpectu Saturni eſt planum annu-
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            li ſui, atque nobis eſt planum æquatoris, ſimilique etiam
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            angulo ad eclipticæ planum inclinatur. </s>
            <s xml:id="echoid-s6675" xml:space="preserve">Proinde cum cog-
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            nita eſt diſtantia loci Saturni eccentrici ab æquinoctio </s>
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