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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 79, page id 820424455:0101
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Sect. 20
ASTRONOMTA
dic centrum Epicreli ad perigéum Eccenerici, ec sub Novi-
lunium redie ad apogeum, ica ue cocâ Lunarione describar
non circulum, sed speciem quandam Ellipleos, seu oracam
lineam, quemadmodum hoc _ sequenti Schemare osten-
dune puneta A bcd F feh A. Tandem hinc sequitur, quod
distancia Luna ab Apogeo v. gr. BTb semper sic dupla
Elongationis ejusdem a Sole ATb. Ec cum in Sole di-
tancia linex medii morus ab Apocei linea diceretur AnO-
malia sive Rreumentum, hic in Luna non eodem sed diverso
vocabulo appellatur cenrrum Lunx. Porum autera quod
ecunda haec sive menstrua Lunae inxe qualitas praestat est hOC,
quod centrum Epicyeli bis in Lunarione Facit Perrae pro-
pinquum, ex bis ab eadem remorum, quemadmodum in
OchemArE XXX. liquido apparet. Unde Fc, ut sola inxequa-
litas secunda ab(que considerarione Epicveli, morum longi-
cudinis Lurx nihil variet. Licer enim cenerum Epicycli cali
mocu nunc rerrae propius hac, nunc rursus ab ea discedat;
camen anguli AT b, A Tc, quibus ipsum a linea medii mo-
tus Solis recedir semper augentur aqualiter, 2deo que visui
nostro in T consticuro cenrrum Fpicycli aequaliter procedere
apPaTeT. Fundamencum igirue hactenus lrarimus inxqua-
licari secundae, _ Fonrem ejus aperniimus, unde manaL;
licet effectum ejus nondum percipere queamus, priulquam
Lipicyelum adhibeamus, qui praecerquam quod effectuis men-
acrux inrequalicaris in se recipit de derirac, etiam oyratione
ta propriam addic inaequalirarem, solutam dictam, quam
nunc explicare aspredimur.
4. In Schemare igicur ZZX. ubi literx repetuntur cadem,
uae in priori, idem quoque Sixnitcane, nimirum A Y F
ineam medii morus Solis, ecc. Fipieyclus aurem per morum
Eccentrici supra expolirum varium acquirie à Tellure I di-
conciam, atque insuper proprio moru circumvolvitur corpus
Cume una abripiens nunc ab i versus R ec p, nunc rursus ab y
extus Z e i, unde conringir Lunam hâc inaegualitare (qua
Prior dicirux) a linea medii morus T A diragari nunc verlus
Parrem, nunc versus Z, ica ue superiorem Exicveli par-
tC5