Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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CHRIST. HUGENII
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dem menſis hora 8 p. </
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<
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<
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">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 & </
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<
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<
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Martii medium fuiſſe inter puncta 15 & </
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<
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<
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rum intervallum eſt. </
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<
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xml:space
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die 23 Mart. </
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">poſt meridiem circa horam octavam.</
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</
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<
s
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xml:space
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">Cognitis hiſce temporibus deſcribo circulum A B C, qui
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">TAB. XLIX.
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fig. 1.</
note
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Saturni orbitam deſignet, itemque G F orbitam Telluris, in
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cujus centro Sol. </
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<
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1656, hora 8 poſt mer. </
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<
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">fuiſſe in A; </
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<
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deſcribo comitis orbitam D E L; </
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xml:space
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fuiſſe in G. </
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<
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">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. </
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mer. </
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<
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tem fuiſſe in H, ubi recta F B ſecat circulum ejus N H K.
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</
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Martii 1659, dierum 1086, quibus Saturnus ab A progreſ-
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ſus eſt ad B: </
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num abſolvere ſcio, atque inſuper exiguum quid, quod in
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annis tribus circuitum integrum conficere nequeat. </
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">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. </
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<
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parallela A G. </
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<
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<
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ſed in K poſitus fuiſſet; </
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<
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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. </
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<
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">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. </
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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; </
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quem conſtituunt rectæ F B, G A, motus apparentis </
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