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- J. Gregorio Portilla, Caldas and the great comet of 1807 , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 41 No. 159 (2017)
- J. Gregorio Portilla, Astronomical information in the first periodical publication of the New Kingdom of Granada , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 47 No. 185 (2023)
- J. Gregorio Portilla, Evolution of the geocentric theory of the Sun’s movement and its use in the first circumnavigation of the world , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 47 No. 184 (2023)
- J. Gregorio Portilla, Caldas and the big comet of 1807 , Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales: Vol. 42 (2018): Francisco José de Caldas
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Abstract
The existence of a manuscript that deals with astronomy and chronology written in the late seventeenth century by Antonio S´anchez de Cozar, a humble priest of indigenous descent, has gone unnoticed by historians of science in the country even though in the mid-nineteenth century it had been given to know as a literary work. In this paper a synthesis of the content of this manuscript is presented, as well as an analysis of some relevant aspects that show an original and independent thought of the author, such as his cinematic proposal of the movement of the heavens, the introduction of a sky between Mercury and the Moon and the proposed reform of the Gregorian calendar. The manuscript also con tains the first astronomical ephemerides made in Neo-Granadian territory consisting of lunar phases and eclipses whose times of occurrence are referred to the local time of a town of the New World: the municipality of V´elez. ©2018. Acad. Colomb. Cienc. Ex. Fis. Nat.
References
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Kronk G. (1999). Cometography: A Catalog of Comets (Vol. 1: ancient-1799), Cambridge University Press, Cambridge.
Marquínez G., Del Rey J. (2005). Física especial y curiosa del maestro javeriano Francisco Javier Trías (1755), Pontificia Universidad Javeriana, Archivo Histórico Javeriano, Bogotá.
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