Map of the Universe

IC 10

Dwarf galaxy · Irregular starburst galaxy in the constellation Cassiopeia

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IC 10
Picture: Credit:, CC BY 4.0, via Wikimedia Commons.

About IC 10

IC 10 is about 2.51 million light-years from the Sun, so the light we see from it left about 2.51 million years ago.

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

Key numbers

Distance2.51 million light-years (0.77 Mpc)
Distance methodLVDB (RR Lyrae, TRGB or other)
Supergalactic coordinatesSGL 354.4°, SGB +17.9°
Absolute magnitude (V)-14.9
Stellar mass1.62 × 10⁸ suns

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

Where it is

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

Zoom out to see it in context: Local Group, a view about 10 million light-years across.

From Wikipedia

IC 10 is an irregular galaxy in the constellation Cassiopeia. It was discovered by American astronomer Lewis Swift on 8 October 1887. In 1935 Nicholas Mayall became the first to suggest that the object is extragalactic.

Excerpt from the Wikipedia article IC 10, licensed CC BY-SA 4.0.

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