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The Small Sagittarius Star Cloud (also known as Messier 24 and IC 4715) is a star cloud in the constellation of Sagittarius approximately 600 light years wide, which was catalogued by Charles Messier in 1764. [4] The stars, clusters and other objects comprising M24 are part of the Sagittarius or Sagittarius-Carina arms of the Milky Way galaxy ...
NGC 6603 is an open cluster discovered by John Herschel on July 15, 1830 [2] located in Sagittarius constellation. [3] Situated within the brightest part of star cloud Messier 24, it is classified by Shapley as type "g". This cluster consists of about 30 stars in a field of about 5 arc minutes in diameter, and is about 9400 light years remote.
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From the perspective of Earth, M18 is situated between the Omega Nebula (M17) and the Small Sagittarius Star Cloud (M24). [3] This is a sparse [9] cluster with a linear diameter of 8.04 pc, [5] a tidal radius of 7.3 pc, [6] and is centrally concentrated with core radius of 0.012 pc. [10] It has a Trumpler class of II 3 p. [4]
The readings for 8, 9, and 10 are a little different, as their binary code has been distributed across an additional column next to the first (to the right in the image). This is intended to show that numbers too large to fit in a single column can be written in several contiguous ones (a scheme which is used elsewhere in the message).
The star cloud stretches several degrees north from the star Gamma Sagittarii and is considered a splendid sight in binoculars - "a bright glow with multitudes of momentarily resolved star-sparks". [2] To the naked eye, the Cloud appears bright and smooth, and is said to resemble a puff of "steam" escaping from the spout of the Sagittarius ...
Messier 22 or M22, also known as NGC 6656 or the Great Sagittarius Cluster, is an elliptical globular cluster of stars in the constellation Sagittarius, near the Galactic bulge region. It is one of the brightest globulars visible in the night sky.
It forms part of the Sagittarius OB1 association. [9] This cluster is located 1,205 pc [2] away from Earth with an extinction of 0.87. [10] Messier 21 is around 6.6 million years old with a mass of 783.4 M ☉. [5] It has a tidal radius of 11.7 pc, [5] with a nucleus radius of 1.6 ± 0.1 pc and a coronal radius of 3.6 ± 0.2 pc.