^iS DE PARALLAXI SOLIS 



valor Ipfuis vr mcdius , multiplicando A pcr ii, 

 B per 8 ct C per S ct diuidcndo lummiim pro- 

 ducioruin pcr 27 , tum fcilicet erit 

 27 7r:z:ii(S, 5^-0,0080.7)4-8(8, 52-0, 0019.)') 

 + 8(8, 61-0, 0062. j) 

 vnde 



7rr=8, 57-0, 005 7-;'. 

 Deniqne fi pro finu Hudfonis qnoqnc momcnta coa* 

 taduum cxtcrnorum. penitus excludantnr, \alor medius 

 ipfuis TT habcbiuir niultiplicando A pcr 1 1, B per 4. et 

 C pcr 8 fummamquc proJudorum diuidendo per 

 23 , erit enim 



23- ^^ it(8, 5S-0, 0080. jO+ 4(8, 74--0, 0029. j') 

 4-8(8, 6i~o, 0C62.J) 

 proinde 



77=: 8, 52 —O, 006 sy , 

 qui valor ab illo pro prima hypothcfi inuento vix 

 diffcrt , cx qno medio quafi fumto inter binas vlti- 

 mas determinationes , tuto ftatucre licebit valorein 

 Parallaxis efie 



71 1= 8, (So — o, oo^. ^' 

 nnlla enim fufficiens aJefle videtur ratio , cur obfer- 

 VJtiones contacluum externorum ad finuin Hudfonis 

 fa iac in dubium rcuocari dcbcrcnt. Hoc valore au- 

 teiTi pro TT affumto repcrietur 

 .V — 17, 4.7 — O, 168.)'. 



13. Quoniam dum obfcruationcs Amcricanas, 

 cum iis iii Europa iullitutis comparauimus , certas 



fuppo 



