hip-12821

Its story

In the W of Cassiopeia shines a white class A star at 413.4 light years. Its light departed around 1612, the year Galileo described the first telescopic observations of Neptune —without yet knowing it was a planet— in his Paduan notebooks. A surface hotter than the solar one, of snow tone, a bright note in the unmistakable silhouette of the seated queen.