skychart for position of uranus october 19

Antares appears white in this WISE false colour infrared image. The brighter of the pair is the red supergiant, while the fainter is a hot main sequence star of magnitude 5.5.Īntares between σ and τ Scorpii. Antares is a member of the Upper Scorpius subgroup of the association, which contains thousands of stars with a mean age of 11 million years, about 170 parsecs (550 ly) from Earth.Īntares appears as a single star when viewed with the naked eye, but it is actually a binary star, with its two components called α Scorpii A and α Scorpii B. Its mass is calculated to be around 12 times that of the Sun.Īntares is the brightest, most massive, and most evolved stellar member of the nearest OB association, the Scorpius–Centaurus Association. Its exact size remains uncertain, but if placed at the center of the Solar System, it would reach to somewhere between the orbits of Mars and Jupiter.

Often referred to as 'the heart of the scorpion', Antares is flanked by σ Scorpii and τ Scorpii near the center of the constellation.Ĭlassified as spectral type M1.5Iab-Ib, Antares is a red supergiant, a large evolved massive star and one of the largest stars visible to the naked eye. Distinctly reddish when viewed with the naked eye, Antares is a slow irregular variable star that ranges in brightness from apparent magnitude +0.6 to +1.6. Antares /ænˈtɛəriːz/, designated α Scorpii (Latinised to Alpha Scorpii, abbreviated Alpha Sco, α Sco), is on average the fifteenth-brightest star in the night sky, and the brightest object in the constellation of Scorpius.

Skychart for position of uranus october 19