Fachbereich Astronomie - Sterne und Weltraum

Astronomie

Leserbilder - Wunder des Weltalls

Comet C/2017 O1 ASASSN

Comet C/2017 O1 ASASSN

Fotograf: José J. Chambó

Comet C/2017 O1 (ASASSN) photographed on November 19th, 2017. Its brightness has dropped clearly during the last month until magnitude 10 approximately. In this image taken when the comet is going on to the Cepheus constellation toward the celestial north pole, it shows a green-bluish coma of 7' diameter and a tail also more faint and short until near 10' lenght.
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