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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)
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Sect. 2.
AASTRONOMIA.
pectata contingie in limire boreo vel australi 90 gradibus à
nodo viroque remoto, diciturque inclinacio maxima. Pam-
que a nodo ascendence per limirem boreum ducitur orbica
lanera, concipienda in ipso trmamento; in cujus Plana
deinde delincacur ipsum rectisium Planeta circa Solem ober-
cancis, quod etiam magis proprie dicitur Orbica PlanctX.
3. A nodo ascendence ulque ad aphelium arcus in orbita
Planetx numeratus, _ addicus lorgicuoini nodi, dat lon-
sicudinem Aphelii ab V; ac licet duo hi arcus in diversis
circulis computentur, prior in ccliprica ab V usque ad no-
dum, se alter in Orbira Planeta ad eclipricam inclinata à
nodo usque ad aphelium; camen cum ambo mocus sint repu-
lares, porest ex iis unus morus componi, qui ividem (Icre-
Sularis, nimirum Aphelii ab aequinoctio; nam regulare ad-
dirum regulari producit regulare.
4. Ab aptrelio deinde in orbica Planerx (incellige hic
lemper eam orbiram, quae ducirur in sptrara fxaru) ad
lineam ulque medii mocus est anomalia media; sed ad lineam
veri mocus est anomalia coxquara, gua in priori Cemicirculo
addira loco aphelii, in posteriori derracta, dar locum helio-
centricum Pianerx, qui deinde reducendus est ad eclipricam,
ec prodic locus heliocenericus Planerae in ecliprica, punctum
Ccilicer, quod inclinationis circulus per locum in orbita ductus
Oftendic.
Aet et et
De mo restexionis ais Ferrae, ortaque
inde Declinatione Solis.
ua ccliprica Ee-
mamenci, cujus poris acdus a mehalla hobis exc2
Ormamentum infinita ocara ab listencibus proxime obver-
sus, dumalter borels pontum in alterqs temispliario abs-
condirmr.
ATA LV. CC circulus magnus