Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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              <pb o="550" file="0280" n="294" rhead="CHRIST. HUGENII"/>
            dem menſis hora 8 p. </s>
            <s xml:id="echoid-s5946" xml:space="preserve">m. </s>
            <s xml:id="echoid-s5947" xml:space="preserve">æquali ſpatio à Saturno remotus
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            apparuit, quibus diebus circa partem ſuæ orbitæ ſuperiorem
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            verſatum conſtat, ſequitur 16 Martii medium locum eum
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            tenuiſſe inter puncta 1 & </s>
            <s xml:id="echoid-s5948" xml:space="preserve">2 circuli modò deſcripti; </s>
            <s xml:id="echoid-s5949" xml:space="preserve">30 verò
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            Martii medium fuiſſe inter puncta 15 & </s>
            <s xml:id="echoid-s5950" xml:space="preserve">16; </s>
            <s xml:id="echoid-s5951" xml:space="preserve">quoniam 14 die-
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            rum intervallum eſt. </s>
            <s xml:id="echoid-s5952" xml:space="preserve">Ac proinde neceſſario perigæus fuit
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            die 23 Mart. </s>
            <s xml:id="echoid-s5953" xml:space="preserve">poſt meridiem circa horam octavam.</s>
            <s xml:id="echoid-s5954" xml:space="preserve"/>
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            <s xml:id="echoid-s5955" xml:space="preserve">Cognitis hiſce temporibus deſcribo circulum A B C, qui
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              <note position="left" xlink:label="note-0280-01" xlink:href="note-0280-01a" xml:space="preserve">TAB. XLIX.
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              fig. 1.</note>
            Saturni orbitam deſignet, itemque G F orbitam Telluris, in
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            cujus centro Sol. </s>
            <s xml:id="echoid-s5956" xml:space="preserve">Saturni locum ſumo ad diem 23 Martii
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            1656, hora 8 poſt mer. </s>
            <s xml:id="echoid-s5957" xml:space="preserve">fuiſſe in A; </s>
            <s xml:id="echoid-s5958" xml:space="preserve">quo tanquam centro
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            deſcribo comitis orbitam D E L; </s>
            <s xml:id="echoid-s5959" xml:space="preserve">Tellurem vero eo tempore
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            fuiſſe in G. </s>
            <s xml:id="echoid-s5960" xml:space="preserve">Locus itaque comitis erat in D, ubi recta G A
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            circulum comitis interſecat, ſiquidem perigæum fuiſſe con-
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            ftat. </s>
            <s xml:id="echoid-s5961" xml:space="preserve">Rurſus poſito ad diem 14 Martii 1659. </s>
            <s xml:id="echoid-s5962" xml:space="preserve">hora 8. </s>
            <s xml:id="echoid-s5963" xml:space="preserve">poſt
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            mer. </s>
            <s xml:id="echoid-s5964" xml:space="preserve">loco Saturni in B, tellure vero in F; </s>
            <s xml:id="echoid-s5965" xml:space="preserve">neceſſe eſt comi-
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            tem fuiſſe in H, ubi recta F B ſecat circulum ejus N H K.
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            </s>
            <s xml:id="echoid-s5966" xml:space="preserve">Eſt autem temporis intervallum inter 23 Martii 1656, & </s>
            <s xml:id="echoid-s5967" xml:space="preserve">14
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            Martii 1659, dierum 1086, quibus Saturnus ab A progreſ-
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            ſus eſt ad B: </s>
            <s xml:id="echoid-s5968" xml:space="preserve">Comitem vero ſpatio dierum 16 circuitum u-
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            num abſolvere ſcio, atque inſuper exiguum quid, quod in
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            annis tribus circuitum integrum conficere nequeat. </s>
            <s xml:id="echoid-s5969" xml:space="preserve">Quum
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            igitur diviſis diebus 1086 per 16 fiant 67, atque aliquot dies
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            abundent, apparet 68 circuitus integros noſtri reſpectu co-
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            mitem peregiſſe, quia in H rurſus perigæus fuit. </s>
            <s xml:id="echoid-s5970" xml:space="preserve">Sit B K
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            parallela A G. </s>
            <s xml:id="echoid-s5971" xml:space="preserve">Si igitur 14 Mart. </s>
            <s xml:id="echoid-s5972" xml:space="preserve">1659, comes non in H
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            ſed in K poſitus fuiſſet; </s>
            <s xml:id="echoid-s5973" xml:space="preserve">ſequeretur eum hiſce 1086 diebus
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            ſexagies octies orbitam ſuam decurriſſe fixarum reſpectu,
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            hoc eſt, totidem menſes periodicos, ſive ſidereos potius,
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            Saturni incolis præbuiſſe. </s>
            <s xml:id="echoid-s5974" xml:space="preserve">Nam quando rectæ A D, B K
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            fecundum quas ex Saturno comes proſpicitur, inter ſe paral-
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            lelæ ſunt, eundem inter fixas locum illis obtinere cernitur. </s>
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            Nunc verò inſuper arcum K H emenſus eſt, qui totidem eſt
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            graduum quot apparenti motu Saturnus inter prædicta duo
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            tempora tranſivit; </s>
            <s xml:id="echoid-s5976" xml:space="preserve">quoniam angulus H B K æqualis eſt ei
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            quem conſtituunt rectæ F B, G A, motus apparentis </s>
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