Messier 4

Star Cluster

The nearest globular cluster to the Sun, loosely concentrated enough that even a small telescope resolves its individual stars.

Facts

TypeStar Cluster
Cluster typeGlobular
Distance from Earth6,030 ly
Diameter662,300,000,000,000 km
Mass1.67 × 10^35 kg
Apparent magnitude5.6
Redshift0
Discovered1745

Messier 4 in context

At 662,300,000,000,000 km across, Messier 4 is 51,977,711,505 times the diameter of Earth.

Its mass is 84,012 times the mass of the Sun.

The light reaching us from Messier 4 tonight left it around 6,033 years ago.

It has been on record since 1745.

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