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# Title: Nicolai Mercatoris Holsati, è Soc. Reg. Institutionum Astronomicarum Libri Duo, De Motu Astrorum Communi & Proprio, Secundum Hypotheses Veterum & Recentiorum præcipuas; Deqve Hypotheseon ex observatis constructione (shelfmark Leibn. Marg. 63)
# Folio 110, page id 820424455:0132
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AASTRONOMIA.
LIB.
v. Er. centrum eccenrrici est in h, manet quidem TBC 8
linea aposei medii, sed apopci veri linea a Y Terra Per cen
trum cccentrici h continuatur.
2. Componitur ixitur motus cccentrici ex duobus mont
bus, centri nimirum cccentrici circumtari in circello c hiBK
moru eequali morui medio solis, ee linea motus medii Met
curii per cenerum seguanis B rranteuntis ac linex mect
motus solis semper parallela. Itaur periodico tempors
Spatio consenriant hi duo morus, ac in contraria rendant.
ille quidem à s per hex i, hic vero à situ B L, ad CituI
B2, B3, _C. Nimirum quo loco BT, B2, _C. lined
eccenericum lecane; ibi centrum exicveli hOC MOTU CCCenEN
delacum reperies. Sit centrum eccenrrici in e; erit
medii motus Mercurti B 1, C centrum epicveli in C
rurlus centrum eccentrici in h, i, B, R, l; erit linea
motus Mercurii B2, B 3, B 4, B5, B6, de centrum epics
in H, l, b, R, L.
3. Hlinc jam mmanifectum es, centrum epieyeli tali mott
eccentrici compotito delatum, describere circa Y Ferrat
Figuram ovatam OTIIBKI; _ propter cundem morut
contingere, uc centrum epieveli sic bis in qualibet rerollu
cione perigeum in Ie K punctis; (quae scilicer 
propiora lunc, quam b punctum;) ac semel cantum
Terra remorissimum in C. puncto.
4. Concepro hoc modo moru centri epieveli, qui illi
e
cccenerici mou compotiro conciliarur; Facile est deinces
speculari, quae exicyclo porro accidare; Figura enim XL. V
linea a centro requantis B per centrum epicveli exrensa oltett
dic aposeum exicyeli medium in M puncto; ac à Y Ferta
icidem per centrum epieyeli educta P V ostendic in V apo
eum exicrelirerum: denique à centro eccentrici s. h.
c
per idem cenrrum epiereli crajecta sOZ, hAC, ill
oftendir in 9 punctum conractus. Movecurque MercUTII
in peripheria exiereli xqualiter semper discedens ab AposCl
ejus medio M, donec ad idem redear claps dicbus 175
Inde porro sequirur, cum Soli conjunsi in aposeo epieret
arite