Image: NASA, the Hubble Heritage Team, STScI, AURAM80 is about 95 light years in diameter and contains hundreds of thousands of stars.

It has a visual magnitude of 2.310 and is 63.7 light years distant. Thank you! It has a visual magnitude of 5.503. ξ Scorpii (xi Scorpii) ξ Scorpii is a multiple sub-giant star in the constellation of Scorpius. The cluster lies about 2 degrees east of Mu Scorpii.It contains 55 stars with an apparent magnitude of 13.5 or greater within 20 minutes of arc from the centre, and the brightest star in the cluster is 9th magnitude.The central star, a white dwarf, has a surface temperature in excess of 200,000 K, which makes it one of the hottest stars in the galaxy. It has an apparent magnitude of 3.93 and is approximately 424 light years distant. Ptolemy believed the cluster to be a nebula.The Ptolemy Cluster contains about 80 stars, the brightest of which has a visual magnitude of 5.6.M7 is approximately 980 light years distant from the solar system. It is mandatory to procure user consent prior to running these cookies on your website.This website uses cookies to improve your experience while you navigate through the website. ξ Scorpii visual magnitude is 4.77.

Giacconi laid the foundations of X-ray astronomy and won a Nobel Prize for his work in 2002.PSR B1620-26 is a binary star located approximately 12,400 light years away in the direction of Messier 4, a globular cluster in Scorpius. The simplified sky map below shows the position of ξ Scorpii in the sky: The combined spectrum of the Kappa Scorpii system has the stellar classification of B1.5 III, which signifies the presence of a giant star in a late stage of evolution.The primary component in the system is classified as a Beta Cephei type variable, which is to say it is a star that exhibits variations in brightness as a result of pulsations of its surface. The brightest star in the system is a spectroscopic binary star, composed of two unresolved stars that orbit each other with a period of 33.01 days. 18 SCO (18 Scorpii). Celestial coordinates for the J2000 equinox as well as galactic coordinates of ξ Scorpii are provided in the following table: It has an apparent magnitude of 3.21 and a radius 16 times that of the Sun. which can be observed with the help of large telescopes. It is composed of two close groups of stars separated by 41 seconds of arc. The distance between them is believed to be only around 15 solar radii. Scorpius constellation lies in the southern sky.

H-R diagram showing the position of ξ Scorpii. ξ Scorpii visual magnitude is 4.77. The latter was called Chelae, or “claws.” In the first century BC, the Romans turned the claws into a separate constellation, Antares is one of the four first magnitude stars lying within 5° of the ecliptic, along with Antares is the most massive, brightest and most evolved member of the Scorpius-Centaurus association, the nearest OB stellar association to the solar system. It was discovered by the Swiss astronomer Philippe Loys de Chéseaux in 1746 and included in Messier’s catalogue in 1764.M4 is easy to find in the sky, as it lies 1.3 degrees west of Messier 6 is an open cluster also known as the Butterly Cluster because its stars form a shape similar to that of a butterfly.The Butterfly Cluster (Messier 6), image: Ole NielsenThe cluster was first discovered by the Italian astronomer Giovanni Batista Hodierna in 1654 and Charles Messier included it in his catalogue in 1764.The bright stars in M4 are mostly hot, blue, class B stars, but the brightest one is a class K orange giant, BM Scorpii.The Butterfly Cluster has an apparent magnitude of 4.2 and is approximately 1,600 light years distant from the Sun.Messier 7 is another open star cluster in Scorpius, located near the scorpion’s stinger.

The companion is also a class B star, type B6.5V, about 5.3 times more massive than the Sun and with 4.4 times the solar radius.Mu-2 Scorpii is a subgiant star belonging to the spectral class B2IV.

Theta Scorpii is the system’s Bayer designation, with its two components being designated as Theta Scorpii A and B, while the name Sargas officially only applies to the primary star. Babylonians knew it as GABA GIR.TAB, or “the breast of the scorpion,” in Egypt it represented the scorpion goddess Serket, and in Persia, it was known as Satevis, one of the four “royal stars.”Shaula is the second brightest star in Scorpius and the 25th brightest star in the sky. The last eruption was observed in 2010 and the next one is expected to occur in the year 2020.Upsilon Scorpii is a subgiant star belonging to the spectral class B2 IV. The red dot in the diagram below shows where ξ Scorpii is situated in The components have visual magnitudes of 5.91, 7.20, and 10.20, and the system is approximately 22.1 light years distant from the Sun.

It consists of at least five stars forming two groups that are separated by 4.67 arc minutes. The star is 17 times more massive than the Sun and has almost 7 times the solar radius.

It has the stellar classification F5 IV and an apparent magnitude of 3.33. It is classified as a Beta Cephei type variable.

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