Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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1
DE MUNDI
SYSTEMATE
Temp. Appar.
GedaniObſervata Cometæ diſtantiaLoca obſervataLoca compu­
tata in Orbegr.′″gr.′″gr.′″Decemb.a Corde Leonis46.24.20Long. 7.1.07.1.293d.18h.29 1/2a Spica Virginis22.52.10Lauſt.21.39.021.38.504.18.1 1/2a Corde Leonis46.2.45Long. 6.15.06.16.5a Spica Virginis23.52.40Lat. a.22.24.022.24.07.17.48a Corde Leonis44.48.0Long. 3.6.03.7.33a Spica Virginis27.56.40Lat. a.25.22.025.21.4017.14.43a Corde Leonis53.15.15Long. 2.56.02.56.0ab Humero Orionis dext.45.43.30Lat. a.49.25.049.25.019.9.25a Procyone35.13.50Long. II28.40.30II28.43.0a Lucid. Mandio. Geti52.56.0Lat. a.45.48.045.46.020.9.53 1/2a Procyone40.49.0Long. II13.3.0II13.5.0a Lucid. Mandib. Ceti40.4.0Lat. a.39.54.039.53.021.9.9 1/2ab Hum. dext. Orionis26.21.25Long. II2.16.0II2.18.30a Lucid. Mandib. Ceti29.28.0Lat. a.33.41.033.39.4022.9.0ab Hum. dext. Orionis29.47.0Long. 24.24.024.27.0a Lucid. Mandib. Ceti20.29.30Lat. a.27.45.027.46.026.7.58a Lucida Arietis23.20.0Long. 9.0.09.2.28ab Aldebaran26.44.0Lat. a.12.36.012.34.13Temp. Appar.
GedaniObſervata Cometæ diſtantiaLoca obſervataLoca compu­
tata in Orbe.d.h.′gr.′″gr.′″gr.′″27.6.45a Lucida Arictis20.45.0Long. 7.5.407.8.54ab Aldebaran28.10.0Lat. a.10.23.010.23.1328.7.39a Lucida Arictis18.29.0Long. 5.24.455.27.52a Palilicio29.37.0Lat. a.8.22.508.23.3731.6.45a Cing. Androm.30.48.10Long. 2.7.402.8.20a Palilicio32.53.30Lat. a.4.13.04.16.25Jan.a Cing. Androm.25.11.0Long. 28.24.4728.24.07.7.37 1/2a Palilicio37.12.25Lat. bor.0.54.00.53.024.7.29a Palilicio40.5.0Long. 26.29.1526.28.50a Cing. Androm.20.32.15Lat. bor.5.25.505.26.0Mar.Cometa ab Hookioprope ſecundam
Arictis obſervabatur, Mar.1d. 7h. 0′
Loudini,cumLong. 29.17.2029.18.201.86Lat. bor.8.37.108.36.12
Apparuit hic Cometa per menſes tres, ſignaque fere ſex de­
ſcripſit, & uno die gradus fere viginti confecit.
Curſus ejus
a circulo maximo plurimum deflexit, in boream incurvatus; &
motus ejus ſub finem ex retrogrado factus eſt directus.
Et non
obſtante curſu tam inſolito, Theoria a principio ad finem cum
obſervationibus non minus accurate congruit, quam Theoriæ
Planetarum cum eorum obſervationibus congruere ſolent, ut in­
ſpicienti Tabulam patebit.
Subducenda tamen ſunt minuta duo
prima circiter, ubi Cometa velociſſimus fuit; id quod fiet au­
ferendo duodecim minuta ſecunda.
prima ab angulo inter Nodum aſcen­
dentem & Perihelium, ſeu conſtituendo angulum illum 49gr.
27′.
18″. Cometæ utriuſque (& hujus & ſuperioris) parallaxis
annua inſignis fuit, & inde demonſtratur motus annuus Terræ in
Orbe magno.
Confirmatur etiam Theoria per motum Cometæ qui apparuit
anno 1683. Hic fuit retrogradus in Orbe cujus planum cum
plano Eclipticæ angulum fere rectum continebat.
Hujus Nodus
aſcendens (computante Halleio) erat in 23gr 23′; Inclinatio
Orbitæ ad Eclipticam 83gr. 11′; Perihelium in II 25gr. 29′. 30″;
Diſtantia perihelia a Sole 56020, exiſtente radio Orbis magni
100000, & tempore Perihelii Julii2d. 3h. 50′. Loca autem Co­
metæ in hoc Orbe ab Halleiocomputata, & cum locis a Flam­
ſtedioobſervatis collata, exhibentur in Tabula ſequente.

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