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The observatory was first established on the balcony of Chapultepec Castle in Mexico City in 1878. The observatory has been operated by the National Autonomous University of Mexico (UNAM) since 1929. [1] It was later moved to Palacio del Ex-Arzobispado in Tacubaya, then on the outskirts of the city on the west side of the Federal District.
Sirius is a binary star system consisting of two white stars orbiting each other with a separation of about 20 AU [e] (roughly the distance between the Sun and Uranus) and a period of 50.1 years. The brighter component, termed Sirius A, is a main-sequence star of spectral type early A , with an estimated surface temperature of 9,940 K . [ 14 ]
Outside of the Secretariat of Public Education (SEP) Headquarters building located in Mexico City. In Mexico, basic education is normally divided into three steps: primary school (primaria), comprising grades 1–6; junior high school (secundaria), comprising grades 7-9; and high school (preparatoria), comprising grades 10-12.
Sirius is currently the brightest star in Earth's night sky, but it has not always been so. Canopus has persistently been the brightest star over the ages; other stars appear brighter only during relatively temporary periods, during which they are passing the Solar System at a much closer distance than Canopus .
Mu is a multiple star system located around 1244 light-years distant, [56] its components discernible in a small telescope as a 5.3-magnitude yellow-hued and 7.1-magnitude bluish star. [57] The brighter star is a giant of spectral type K2III, [ 56 ] while the companion is a main sequence star of spectral type B9.5V. [ 58 ]
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Mexican flag and banners Murals by Diego Rivera. In Mexico, the Secretariat of Public Education (in Spanish Secretaría de Educación Pública, SEP) is a federal government authority with cabinet representation and the responsibility for overseeing the development and implementation of national educational policy and school standards.
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