47 Tucanae

Star Cluster

The second brightest globular cluster in the sky, dense enough at its core that its stars are separated by only a fraction of a light year.

Facts

TypeStar Cluster
Cluster typeGlobular
Distance from Earth14,500 ly
Diameter1,135,000,000,000,000 km
Mass1.39 × 10^36 kg
Apparent magnitude4.09
Redshift0
Discovered1751

47 Tucanae in context

At 1,135,000,000,000,000 km across, 47 Tucanae is 89,075,498,352 times the diameter of Earth.

Its mass is 699,849 times the mass of the Sun.

The light reaching us from 47 Tucanae tonight left it around 14,500 years ago.

It has been on record since 1751.

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