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The brighter star is a giant of spectral type K2III, [56] while the companion is a main sequence star of spectral type B9.5V. [58] Nu 1 Canis Majoris is a yellow-hued giant star of magnitude 5.7, 278 light-years away; it is at the threshold of naked-eye visibility. It has a companion of magnitude 8.1.
Antares is the brightest star in the constellation of Scorpius. It has the Bayer designation α Scorpii, which is Latinised to Alpha Scorpii. Often referred to as "the heart of the scorpion", Antares is flanked by σ Scorpii and τ Scorpii near the center of the constellation. Distinctly reddish when viewed with the naked eye, Antares is a slow ...
Scorpius is a zodiac constellation located in the Southern celestial hemisphere, where it sits near the center of the Milky Way, between Libra to the west and Sagittarius to the east. Scorpius is an ancient constellation whose recognition predates Greek culture; [ 1 ] it is one of the 48 constellations identified by the Greek astronomer Ptolemy ...
Sirius is colloquially known as the "Dog Star", reflecting its prominence in its constellation, Canis Major (the Greater Dog). [19] The heliacal rising of Sirius marked the flooding of the Nile in Ancient Egypt and the " dog days " of summer for the ancient Greeks , while to the Polynesians , mostly in the Southern Hemisphere, the star marked ...
Messier 4. Messier 4 or M4 (also known as NGC 6121 or the Spider Globular Cluster) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1745 and catalogued by Charles Messier in 1764. [9] It was the first globular cluster in which individual stars were resolved.
The red area called Sh2-9 has Sigma Scorpii at its center, and Antares is just outside the picture at the bottom. The large multicoloured Rho Ophiuchi cloud complex with the Dark River clouds (or Rho Ophiuchi Streamers ) as Barnard 44 and 45 on the right, seemingly radiating towards the distant Pipe Nebula and the Galactic Center , extending ...
The Scorpius–Centaurus association (sometimes called Sco–Cen or Sco OB2) is the nearest OB association to the Sun. This stellar association is composed of three subgroups (Upper Scorpius, Upper Centaurus–Lupus, and Lower Centaurus–Crux) and its distance is about 130 parsecs or 420 light-years. [1] Analysis using improved Hipparcos data ...
Beta Scorpii (β Scorpii, abbreviated Beta Sco, β Sco) is a multiple star system in the southern zodiac constellation of Scorpius. It bore the traditional proper name of Acrab / ˈækræb /, [8] though the International Astronomical Union now regards that name as applying only to the β Scorpii Aa component.