On The Determination Of The Solar Rotation Elements I, Omega And Period Using Sunspot Observations By Ruder Boskovic In 1777
RUDARSKO-GEOLOSKO-NAFTNI ZBORNIK(2021)
摘要
In September 1777, Ruder Boskovic observed sunspots for six days. Based on these measurements, he used his own methods to calculate the elements of the Sun's rotation, the longitude of the node, the inclination of the solar equator and the period. He published a description of the methods, the method of observation and detailed instructions for calculations in the second chapter of the fifth part of the Opera in 1785. In this paper, Boskovic's original calculations and repeated calculations by his procedure are published. By analysing the input quantities, procedures, and results, the input quantities of the error, and the calculation results are discussed. The reproduction of Boskovic's calculations is successfully reproduced and we obtained very similar results. The conclusion proposes a relationship of Boskovic's research with modern astronomy.
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关键词
Ruder Boskovic, solar rotation elements, sunspot observations
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