Clavius, Christoph, In Sphaeram Ioannis de Sacro Bosco commentarius

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Sit rurſus inquirenda declinatio, quam habet Hircus ſtella lucidiſſima
11Declinatio
Hirci
.
in ſiniſtro humero Aurigæ, &
eſt tertia in conſtellatione 12. Longitudo huius
ſtellæ
in tabula habet grad.
48. min. 20. cui ſi addantur grad. 27. min. 47. confla-
bitur
uera eius longitudo à principio , grad.
76. min. 20. quæ quoniam mi-
nor
eſt, quàm grad.
90. exiſtet data ſtella in ſemicirculo Eclipticæ aſcendente,
numerandaque
erit eius longitudo à , (quoniam eius latitudo borealis eſt)
contra
ſignorum ſucceſſionem;
quæ longitudo, ſi eius longitudo vera detra-
hatur
ex grad.
90. comprehendet gra. 13. min. 40. cuius ſinus verſus erit 2832.
Latitudo autem eiuſdem ſtellę borealis eſt grad. 22. min. 30. eiuſque comple-
mentum
grad.
67. min. 30. Differentia quoque inter grad. 23. min. 30. maximæ
declinationis
Eclipticæ, &
grad. 67. minut. 30. complementi latitudinis ſtellæ,
complectitur
grad.
44. min. 0. Sinus uero complementi huius differentiæ eſt
71923
.
Itaque ſi fiat, vt 10000000000. quadratũ ſinus totius ad 3683839238.
rectangulum
comprehẽſum ſub 29874.
ſinu recto maximæ declinationis Ecli
pticæ
, &
92387. ſinu complemẽti latitudinis ſtellæ datæ, ita 2832. ſinus uerſus
longitudinis
ſtellæ à , contra ſucceſſionem ſignorũ ad aliud, inuenietur hic
numerus
1043.
quem, quia minor eſt, quám 71933. ſinus complementidifferen
tiæ
inter maximam Eclipticæ declinationem, &
complementum latitudinis
ſtellæ
, auferemus ex 71933.
ſinu complementi dictæ differentiæ, remanebitq;
70896
.
ſinus declinationis borealis Hirci, cui in tabula ſinuum reſpondent gr.
45
.
min. 9. pro declinatione Hirci ab Aequatore in boream.

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