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Christiani Lvdovici Gersten, Math. Prof. Ord. Et Reg. Societ. Lond. Sod. Methodvs Nova Ad Eclipses Terrae Et Appvlsvs Lvnae Ad Stellas Svppvtandos : Svbnectitvr De Observatorii Academiae Giesensis Statv Brevis Enarratio Simvlquve Bonarvm Elegantiorvmqve Scientiarvm Cvltores Ad Avdiendas Fvtvras Per Instans Semestre Lectiones Mathematicas : Ea Qva Par Est Hvmanitate Invitantvr
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20 26) o(se⸗

7 1 tempori couupetens 5a. 46. 30. aug. circ. declin. per centrum O tranfeuntis cum meridiano. Ab hoc ſubducta diff. inter aſc. rect. O& C remanet pro ang. circ. declinat, per centrum C tranſeuntis cum meridiano 7 1 0 7 = 51. 45.47. Conveniens altit. lunae= 33. 33. Angulus circ. decl. cum

9 1 A d 3 2. verticali= 41. 11. Parall. altit.= 47. 70. parall. declin.= 36. 0. Parall- . 1 0ré,. aſc.rect. in circ. parall.= 31. 29. Declin. viſa C= 17.43. 46. diff. inter -

declin. viſam C& declin. O= 19. 24. Diff, inter aſc. rect. O& zeerec. Creduca ad partes citculi maximi, poſita paralleli decl. I 7 44.2) 7.3 4 parall. alo ractee 3 1 25, crgo litandi locorum O C in hoc circ. pa- rall.= 26. 5. Si itaque ex z6. 5, ranquam baſi,& 19. 28. tanquam ca- theto conſtruitur triang. rectang., hypothenuſa huius triang. erit äſtaneſe centr. O& C: Sed 26 5.= 1 r6. cuius quadcatum 2449225.& 19.28. 2.

1163., cuius quadratum 1 3642²24.; Summa quadratorum 3813449 cuius radix quadrata= 1953. duobus ſaltim minutis ſecundis minor fum- ma ſemidiametrorum apparencinm.

Dro fine corretlia. 20) Huius momentum ſupra(Nam. 14.) determinatum h. 22. 4 1 1 1 43. 31. Tempus eſt h. 21. 57. 31. differ. 46.0. Ad hanc differentiam 7 1 7

motus C in longit. eſt a8. 25. incrementum latitud.= z. 19. motus Oin 7 1 7 1 3 07/ 4

longit.= 1.51. Quamobrem ad h. 12. 43. 31. longit. C= Fi. 35. 13. 4 1. 0 114 9 7 U

latit. C= 38. 36. longit. O= 71. 8. 39. Aſcenſiorecta O= 48.42.17.

4 7/ t O t, t 9 7 771 Declin. O= 18.4.35, Aſc. rect. C= 43,7 8.3 8. Declin. C= 18.43.49.

.. 1 21) Diff. temporis inter fin. eclip.& merid. eſt h. 1. 16. 22, quae in arcus 07

7 1 aequat. converſa= 19.7. 15. Diff. inter aſc. rect. O& C= 16.21.& aſc.

7 recta C praecedit aſcenſ. rect. O, ergo haec diff. addenda, ut fiat 12.23. 36,

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