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VISITEN TAMBIÉN LO ÚLTIMO EN TURISMO ASTRÓNOMICO NACIONAL :
EL NUEVO GRAN OBSERVATORIO SOLAR DE CHILE (GOSCh)



□□□ CONSULTEN AQUI LAS PREGUNTAS FRECUENTES EN ASTRONOMÍA

IMAGEN ASTRONÓMICA DEL DÍA


□□□ ...Y DE PASO ECHEN UN VISTAZO A LA IMAGEN ASTRONÓMICA DEL DÍA




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Cliquer ici pour accéder à la version française "Image Astronomique du Jour".

January 26th : a rare flyby witnessed

On that evening a mid-size asteroid labelled 2004 BL86 approached at some 1,200,000 km from Earth, that is roughly 3 times the distance to the Moon. Such events are (fortunately) extremely rare, and they use to provide a nice spectacle to advanced stargazers.
And indeed it was amazing : not only the asteroid was bright enough to be seen with medium to large telescopes (although a deeply detailed chart was necessary to correctly identify it...) but its motion throurough the stars can be appreciated in real time !


On the above picture, taken in Cancer (not far from the star cluster M44) we can see the short trail left by the object, corresponding to a displacement of over 3 arcmin. performed in 90 seconds only ! That corresponds to covering the apparent size of the Moon in less than 15 minutes...

Photo: Cristian Valenzuela (Observatorio del Pangue) - January, 26th, 2015
Camera: Canon EOS 60D, exp: 90 sec.