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Fomalhaut star Fish main southern constellation, of magnitude 1.3, spectral class A and 20 light years away from Earth.

It has a radius and a mass roughly double those of the Sun and a surface temperature of 8,500 K. It’s most known and studied is to have an extended circumstellar disk of gas and dust.

It is also suspected that the star will host a planetary system, and in 2008 it was announced that a planet orbiting the star had been observed in the visible band. This would be the first planet directly observed in the visible. However, observations and subsequent studies have questioned this finding. The name of the star derives from the Arabic: فم الحوت, From al-Hut, which means “the mouth of the whale.” Fomalhaut looks like a star from white-blue color; its detection in heaven is facilitated not only by its brightness from its unique location, away from other bright stars and then highlight in a poor light blue field of stars flashy. It has a declination of 30 degrees, which favors places observers to southern latitudes. However, its location not too differs from the celestial equator is so that it is visible from most of the populated areas of the Earth. In particular, it becomes invisible only from 60 ° N, thus excluding Alaska, northern Canada, Greenland, Iceland, the northern Scandinavian regions, and a large part of Russia. It shows relatively high in the sky starting from the Mediterranean regions, while it is circumpolar south of 60 ° S, that is only in the Antarctic regions.

The most auspicious time for your observation than the period from August to the one in December, in the northern hemisphere night sky, while south of the equator shows from June to January; its presence in the skies after sunset in the northern hemisphere of the Sun indicates the approach of the fall season.



To open the video, click on the picture, good view from your Alessandro Brizzi.

Fomalhaut star Fish main southern constellation.