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# Title: [Astronomiae Physicae & Geometricae Elementa] Astronomiæ Physicæ & Geometricæ Elementa (shelfmark Leibn. Marg. 124)
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occurrit; et consequenter quod ria Solis inter Fixas, spectata ex alio
quoris Planeta, dirersa sit ab ejus via e Tellure visa, sive Feliprica.
PROPOSITIOTII
DETaenomena Planetarum e Sole visorum, quatenus in Orbitis mo.
ventur, quarum plana ad planum Lelipticae sunt inclinata,
describere.
Cum Telluris _ Planetarum Orbita ita disponantur, ut carum
plana ad se invicem inclinentur, seque intersecent (ut ProP. I.
generatim expositum) in rectis per Solem traductis: in exponen-
dis Phanomenis Planetarum e Sole visis, consideranda est inesi-
natio plani Orbita cujusque ad planum PCliptica sive Orbitae Pel
luris. Hloc enim planum Reliprica ab AAtronomis pro norma Ra-
tuitur, ad quod scilicet reliquarum Orbitarum plana inclinata cen-
sentur; ex quidem jure, cum hoc illud sic, in quo Tellus (Actronomi
locus) cirea Solem detertur, vel in quo Sol circa Tellurem deferri
videtur: EF Obserrator, in alio quoris Planetarum posituS, SuX
Orbitx planum pro norma haberet, ee reliquorum Orbitas tan-
quam ad illud inclinatas consideraret.
Recta per Solem ducta, qua est communis sectio plani Orbitae Pla-
neta cum plano Reliptica, rocatur Linea Nodorum ictius Plancta,
cum ipsa Puncta, in quibus Planetae Orbita secat Felipticam, vocentur
Nodi. Sit ex. er. OF8 + Orbita Telluris planum intinite produ-
Ctum, N P n Orbita Planeta cujulris intersecans planum prioris Or-
bita sive Fclipi ea in N e n dicti Planetae Nodis; ita ut Orbitx
hujus pars altera N P n extare supponatur supra planum hujus sche.
matis, alteran p eintra idem
deprimi (unde Fllipsis appa-
ret): Recta Nn NVodos conjun.
sens, communis sectio plani
Orbita Planeta cum plano
Rcliptica, est L inea Nodorum.
Patet Planctam in Nodo-
rum alterutro n situm, c Sole
O, in Feliptica plano rideri.
Prosreltus vero Planeta usque
ad P, c Sole rilus, ab PClipti-
ca deriare videbitur; _ (per
DeF. V. ELCM. XI.) rectae OP, 8
proinde Planeta ad e e Sole
vis, inclinatio ad Fclipti
Cam (qux Planetae Latitudo Flelio. Centrica dicitur) mensuratur
per ansulum P O E, Polita P F. recta perpendiculari ad Fcliptica
planum. Latieudo autem haec FTeliocentrica continuo ausebitur.
donec Planeta ad L. perreniat, nempe Limitem; ubi aequalis est in.
clinationi Orbis Planetae ad Feliprica planum. Atque inde rur
Tus, moto Planeta, minuitur, donec Planeta ad Nodum alterum
 aeellat
it
AST RONOMTL PHYSTCA