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File:Globular_star_cluster_Messier_4.jpg · Wikimedia Commons · See Wikimedia Commons

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Messier 4

Also known as M4

Globular cluster in the constellation Scorpius. Closest globular cluster.

AI overview

Messier 4 is a globular cluster—a spherical collection of thousands of stars bound together by gravity—located in the constellation Scorpius. It's notable for being the closest globular cluster to Earth, making it an accessible target for astronomers studying these ancient stellar systems.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Distance from Earth: 0.002
Radius: 35
Mass: 6.280
Image: M4map.png

Show 16 more facts

Commons gallery: Messier 4
Commons category: Messier 4
time of discovery or invention: 1746-01-01
catalog code: GCl 41
apparent magnitude: 4.435
radial velocity: 71.05
absolute magnitude: -7.19
metallicity: -1.17
spectral class: IX
right ascension: 245.896750
declination: -26.525750
angular diameter: 35
age estimated by a dating method: 11500000000
right ascension component of proper motion: -12.514
declination component of proper motion: -19.022
parallax: 0.4995

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Article

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. It was the first globular cluster in which individual stars were resolved.

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