5i8 DE PERICVLO , A COMETAE 



ad / A z=9,<Ji i8924-|ad / A — 9,61 i 8924'ad /£ ^4,0555899 

 IX — 4, 3 80 1469/ x zz 4>39°335^/(^-X)zi2,755b7<5i 



6,8iii66o 



Iw —8,5634673 



3,9920393 

 flu —3,14.06333 



/ ^? =0,8514060 



/tang.Cj) — 8, 235694.8 



4,0022278 

 Uv =3,1717775 



t f£ =0,8304503 



/1^7*! =8,2476987 

 /tang.w = 8, 5368106/ tang. ^4^ = 9, 8 80 5 766* 



/^ =9,0871008/ £! 



ergo ^F — 7, 102 |ergo A* i 6, 768 



et -^ = 0, 233 



et 



,A Y 



= <0, 122 



= 9,3672609/^-^=8,1282753 



e t 5 _Iir-_X) — 0,013. 



Annotatio. Membra poftrema litera £ aflecta conti- 

 nent perturbationem ex actione mutua ortam , qua- 

 tenus fcilicet nafcitur cx dittantia cometae a terra 

 tempore r ~ 1 diei. «Quod fi -er^o hinc progredia- 

 mur per tempus \d , tfatueodo 4tzz *> in fine hu- 

 ius temporis diflantia illa ad femiflem reducetujr , 

 vnde quadruplo naior perturbatio nafceretur. QuaTn- 

 obrem cum labente. hoc interuallo d t zz ± d per- 

 turbatio continuo fiat maior , conuenit medium fu- 

 mere , quod quadruplo maius erit quam inuentum t 

 ficque (huuamus 



§-L*=*2 — o 036 et y I^7^ = o, 026- 



quocirca habebimus 



dd X — — 7, 066. d t* ddxrz — 6, 804. d r* 

 d d Y = — c, 096. d r* d dy — — o, 2 5 9. </ r* 



hincque oriuntur fequentes \alores: 



X'= 23996, 451 -7, o9v.</r— 3, 53 3 ^t* 

 Y'=4i2, 8974-412,899.^^ — 0, 048. </r* 



jjj — 24566, 059- 576, 503. */r— 3, 402. </r* 

 y = 845, 563— 19, »46. dr — o, up.dr porro 



