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Messier 23: Difference between revisions
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[[File:375px-Messier object 023.jpg|thumb|Messier 23]] | |||
Messier 23 (also known as NGC 6494) is an open cluster in the constellation [[Sagittarius]]. It was discovered by Charles Messier on June 20, 1764. | Messier 23 (also known as NGC 6494) is an open cluster in the constellation [[Sagittarius]]. It was discovered by Charles Messier on June 20, 1764. | ||
M23 is at a distance of about 2,150 light-years away from Earth, its radius is around 15-20 light years. There are some 150 identified members in this cluster, the brightest being of magnitude 9.2. M23 can be found with a modestly sized telescope in the rich starfields of the Sagittarius Milky Way. | M23 is at a distance of about 2,150 light-years away from Earth, its radius is around 15-20 light years. There are some 150 identified members in this cluster, the brightest being of magnitude 9.2. M23 can be found with a modestly sized telescope in the rich starfields of the Sagittarius Milky Way. | ||
==HGS Session References== | ==HGS Session References== | ||
HGS Sessions - Clearing [[El Obour City, Cairo Governorate, Egypt]] - 4/2/2015 <ref>HGS Session</ref> | HGS Sessions - Clearing [[El Obour City, Cairo Governorate, Egypt]] - 4/2/2015 <ref>HGS Session</ref> | ||
==References== | ==References== | ||