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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
# Folio 457, page id 1041163592:0491
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PRINOIPLA MATHEMATICA.
T. 2B E. H
lis = AF, CeU 5o AFE quamproxime. A perpendiculo auteM a YCuFIVI.
stella L ad rectam P F demisso, distantia COMCEX CFAE ; L L.
Dic Ois, Feb. 27. Hor. 8+ P. MI. Cometxe in Q existentis di
stantia a Rella O equabat distantiam sellarum O ec H, et recta
DO producta cransibat inter Aellas R ex B. Positionem hujus
recta ob nubes incerrenientes, magis accurate detinire nOn POCuI.
Dic Stis, Mart 1, HOT. IT. P. MI. Cometa in R existens, RCllis
R e C accurare interjacebat, de rectae CR IE DarS C. R paulo
major crat quam ZCK, ec paulo minor quam ZCI F JC R,
adeoque aequalis ZCR F is C R Ceu +3CR.
Die Sii Mart. 2. HOr. B. P. MI. Cometxe existentis in 5, di-
Rancia a Bella C CraL = FC quamproxime. Distantia RCllae si a
recta CS producta Crat + FC; 8 distantia Aellae B ab cadem recta,
crat quincuxlo major quam distancia Aellxe F. Item recta NS
producta transibat inter Aellas F ee L, quineuplo vel sexcuplo pro-
pior existens Aellae sI quam Atellae I.
Dic Bni, Mart. 5. hOr. TIZ. P. M. Cometa existente in T3
recta MT aequalis crat ZMI, ec recta L. F producta cransibat
inter B ex F, quadruplo vel quincuplo propior squam B, au-
Terens a B F quintam vel sextam ejus partem versus F. PE MT
producta transibat exera spacium B f ad partes Aellx B, quadru-
plo propior existens Aellxe B quam Aellae f. Frat M Cella PerC.
Zigua quae per Telercopium videri vix poruit, et L. Cella major
quasi magnicudinis octare.
Ex hujusmodi obserracionibus per constructiones sigurarum de
computationes (Dolco quod Rellarum A et B distancia cACF
282. 6. 46, 8c Hella  longitudo 8 268. 4. 1. 50 et latieudo
borcalis 128. 82, Aellaeque B Consitudo 8 288. 40. 24 dc laci-
tudo borealis TFS. 1770;) derirabam lonsicudines ec lacicudines
COnCEx. Mlicrometro parum actabre conseructo ulus Cum. sed
lonsicudinum tamen eE lacitudinum CrrOreS (quatenuS 2b ob-
serrationibus nostris orianeur) dimidium minuri unius primi rix
luperant, praeterquam in obserracione ultima Mart. 9. ubi poli
tiones sellarum minus accurate determinare porui. Cassinus qui
alcentionem rectam Cometa eodem tempore observarie, decli-
nationem ejus tanquam invariatam manentem parum diligenter
delinirie. Nam Comeca Cjuxta obterraciones nolcas) in sine
mOcuS