Newton, Isaac
,
Philosophia naturalis principia mathematica
,
1713
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hora mat. </
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<
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>6 1/2
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Hookius
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noſter Cometam vidit in 3
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gr.
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30′ cir
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citer, idQ.E.I. linea recta quæ tranſit per Spicam Virginis &
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Cor Leonis, non exacte quidem, ſed a linea illa paululum defle
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ctentem ad boream.
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Montenarus
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itidem notavit quod linea a
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Cometa per Spicam ducta, hoc die & ſequentibus tranſibat per
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auſtrale latus Cordis Leonis, interpoſito perparvo intervallo inter
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Cor Leonis & hanc lineam. </
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Spicam Virginis tranſiens, Eclipticam ſecuit in 3
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gr.
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46′, in an
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gulo 2
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gr.
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51′. </
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gr.
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,
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ejus latitudo fuiſſet 2
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gr
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26′. </
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<
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>Sed cum Cometa conſentientibus
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Hookio
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&
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Montenaro,
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nonnihil diſtaret ab hac linea boream ver
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ſus, latitudo ejus fuit paulo minor. </
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Mon
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tenari,
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latitudo ejus propemodum æquabat latitudinem Spicæ ,
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eratque 1
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gr.
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30′ circiter, & conſentientibus
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Hookio, Montenaro
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&
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Angone
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perpetuo augebatur, ideoque jam ſenſibiliter major erat
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quam 1
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gr.
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30′. </
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<
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gr.
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26′ &
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1
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gr.
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30′, magnitudine mediocri latitudo erit 1
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gr.
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58′ circiter. </
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<
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Cauda Cometæ, conſentientibus
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Hookio
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&
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Montenaro,
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dirigebatur
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ad Spicam , declinans aliquantulum a Stella iſta, juxta
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Hookium
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in auſtrum, juxta
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Montenarum
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in boream; ideoQ.E.D.clinatio illa
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vix fuit ſenſibilis, & Cauda Æquatori fere parallela exiſtens, ali
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quantulum deflectebatur ab oppoſitione Solis boream verſus. </
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LIBER
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TERTIUS.</
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Nov.
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24. Ante ortum Solis Cometa viſus eſt a
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Montenaro
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in 12
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gr.
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52′, ad boreale latus rectæ quæ per Cor Leonis & Spicam
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Virginis ducebatur, ideoque latitudinem habuit paulo minorem
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quam 2
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gr.
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38′. </
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Montenari, Angonis
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&
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Hookii,
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perpetuo augebatur; ideoque jam
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paulo major erat quam 1
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gr.
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58′; & magnitudine mediocri, abſque
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notabili errore, ſtatui poteſt 2
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gr.
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18′. </
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<
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Ponthæus
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&
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Galletius
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jam decreviſſe volunt, &
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Cellius
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& Obſervator in
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Nova
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Anglia
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eandem fere magnitudinem retinuiſſe, ſcilicet gradus unius
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vel unius cum ſemiſſe. </
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Ponthæi
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&
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Cellii,
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eæ præſertim quæ per Azimuthes & Altitudines capieban
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tur, ut & eæ
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Galletii
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: meliores ſunt eæ quæ per poſitiones Co
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metæ ad fixas a
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Montenaro, Hookio, Angone
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& Obſervatore in
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Nova-Anglia,
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& nonnunquam a
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Ponthæo
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&
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Cellio
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ſunt factæ. </
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<
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Cometa hoc menſe circulum fere maximum deſcripſit, ſecantem
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Eclipticam in 25. 12′, idQ.E.I. angulo 3
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gr.
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12′ quamproxime. </
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Nam &
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Montenarus
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Orbitam ab Ecliptica in auſtrum, tribus ſal-</
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