Map of the Universe

M54

Globular cluster · Globular cluster in Sagittarius

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M54
Picture: ESA/Hubble & NASA, CC BY 3.0, via Wikimedia Commons.

About M54

M54 is about 85,714 light-years from the Sun, so the light we see from it left about 85,714 years ago.

It is 60,047 light-years from the centre of the Milky Way.

The map lists it as a globular cluster and shows it at the scale of the Milky Way and the Local Group, drawn on the plane of the Milky Way.

The nucleus of the Sagittarius Dwarf Spheroidal Galaxy, which the Milky Way is tearing apart.

Key numbers

Distance85,714 light-years (26.28 kpc)
Distance from the Galactic centre60,047 light-years
Galactic coordinatesl = 5.61°, b = -14.09°
Absolute magnitude (V)-10.0
Stellar mass1.7 × 10⁶ suns
Half-light radius12 light-years

Data: Local Volume Database v1.1.1 (Pace 2025).

Where it is

Its place in the universe, from the inside out: Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.

Zoom out to see it in context: Milky Way, a view about 160,000 light-years across.

From Wikipedia

Messier 54 is a globular cluster in the constellation Sagittarius. It was discovered by Charles Messier in 1778 and then included in his catalog of objects that could be mistaken for comets.

Excerpt from the Wikipedia article Messier 54, licensed CC BY-SA 4.0.

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