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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
# Folio 443, page id 1041163592:0477
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PRINOIDTA MATHEMATICA.
443
de motu suo apparente, adeoque praeterierat Perisaeum; Splen-
dor rero capiris nihilominus indies crelcebat, usque dum C Ometa TEKFIVS.
radtiis Solaribus obrectus delit apparere. Cometa Anni 1683,
obferrante eodem sevelio, in Enc Mensis Fulii ubi primum con-
spectus est, cardissime movehatur, minuta prima 40 vel 45 circi
ter singulis diebus in Orbe luo conticiens. FZ CO FCMBOTC MOEUS
ejus diurnus perpecuo augebatur usque ad Sept. 4. quando crasit
gradtuum quasi quinque. Igitur toto hoc tempore Cometa ad
Perram approxinguabat. Id quod etiam ex diametro capitis
Micromeero mensurata colligitur: quippe quam sevelius reperie
Ang. 6. eNe tantum 6. 5 inclusa COma, AE Sept. 2. CsC 9. 7.
Capur isieur inicio lonse minus apparuie quam in sinC MOEUS, aC
inicio tamen in vicinia Solis longe lucidius exticie quam circa
Fnem ut retere idem Flevelins. Proinde toto hoc tempore, ob
recelsum ipsus a Sole, quoad lumen decrevie, non obstante ac-
cessu ad Terram. Cometa Anni 1618 circa medium Mensis De-
cembris, ex iste Anni 1680 circa finem ejusdem Mensis, celerrime
morebantur, adcoque tunc erant in Perigaeis. Verum Splendor
maximus capitum contisit ante duas fere septimanas, ubi modo
exierant de radiis Solaribus; se splendor maximus caudarum
paulo ante, in majore vicinitare Solis. Caput Cometae prioris,
juxta obserrationes Cysati, Decemb. I. majus videbatur sellis pri-
mae magnitudinis, et Decemb. 16. (jam in Perigao existens) mag-
nicudine parum, splendore seu claricace luminis plurimum dete-
Cerat. Tan. 7. Keplerus de capice incertus Ainem fecit observandi.
Dic T2 mensis Decemb. conspectum ec a Flamstedio oblerratum
est caput Cometx posterioris, in distantia norem graduum 2 Solc;
id quod sellae certix magnicudinis vix concessum Fuistet. Decemb.
25 e 27 apparuit idem ut sella certia magnicudinis, diminutum
utique (plendore Nubium juxta Solem occidentem. Decemb. 26.
velocissime motus, inque Perisxo propemodum existens, cedebat
Ori Pegas Stellae certia magnicudinis. Fan. 3. apparebat ut Scella
QuarEA, Fan. 9. uE Scella quincae, fan. 13. ob splendorem Lunx
crescentis disparuit. Fan. 25. rix aequabat Scellas magnicudinis
septimx. Si sumantur aequalia a Perioxo hinc inde teniDora, ca-
Dica quae cemporibus illis in longinquis regionibus posita, ob
aequales a Terra distantias, aequaliter lucere debuissene, in plaga
Solis maxime splenduere, ex altera Perigaei parte eranuere. Igi-
cur ex magna lucis in veroque sicu differentia, concluditur magna
Solis et Comerae ricinitas in licu priore. Nam lux Comctarum
regularis
L. IVF V