( i8p3 ) 
a:flimatx^ (quas medii Motus rDenfuras, inftar GradiioiLs 
ponimus) fuiit in fingolbin fubfefquiahera ratiooe diftan- 
li^ Perihelia a Sole. 
His neceflario pra?miffis proponaiur alicujus c Cornetis 
noftris Locum vifum ad datum tempos ilwpumc. Fri- 
mum itaque ^^Solis Locus ab ^^quioofiio in proraptu fic^ 
ejiifdenique diftanti,:^ a Terra Logax'nhnius, Capiatur 
intervallum Temporss inter Tempos Perihclii & Ternpasi 
datum, in diebos paitibofque diet dtcimalibus. fiu- 
jus immeri Logarithmo addatur Logarithmus conflans 
9,960128 ac compkmentura Arithmeticum fHquialrerius 
Logarithm! diftantis* Perihelia^ a Sole : fomma Logarith- 
mus eric Motus medii in prima Columna Tabula Generalis 
qua^rendi. 5^. Cum motu medio capiatur in Tabula cor* 
refpondens angulos a Perihelio, & Logaridimus pro diftaa» 
tia a Sole: ac in Conietis Diredis adde, inRetrogradis fob- 
due, fi fuerit Tempus poll: Periheliom s vel in Direct is 
fubduc & in Retrogradis adde, fi fuerit ante Periheiium, 
angulum fic inventum a loco vel ad locum Perihelii. Et 
habebitur Locus Cornet;^ in orbita propria : Et ad Loga», 
rithmun.1 pro Diftantia ibidem inventum addatur loga- 
rithmus diftantiae Perihelia ^ fiimma erit Logarithmus 
diftantia verse Cometh a Sole. 4^ Com Loco Cometh 
in Orbita^ dato Loco"Nodi^ capiatur diftantia Comers a 
Node: ac data IncIin;atione pkoi., dabuntor, ^otiifimis 
Trigonometria.' prseceptis. Locos Cometse ad EclipticarB 
redo^^ u;j5 cum Inclioatiorie five Latitodine Heliocentric^, 
..ac Dii??-or-icS Curtata3 Logark-hmm. 5°, Ex his datis, iijp. 
(dem oamiuo re^^ulis quihu? loca Planetarum, ex dato Lo- 
co & Diftantia Soiis^ obtinebkur l„ocns V dm feu Gebcen- 
tricus cuiu Latitodine viia. Id qaod exemplb uno vel 
aJteio operse pretium erit iliuftrare. 
Mnsmmmramrain Ex- 
