Map of the Universe

Andromeda I

Dwarf galaxy · Dwarf galaxy in the constellation Andromeda

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Andromeda I
Picture: NASA/ESA Hubble ACS; Evan Skillman et al. & Melina Thévenot, CC BY-SA 4.0, via Wikimedia Commons.

About Andromeda I

Andromeda I is about 2.53 million light-years from the Sun, so the light we see from it left about 2.53 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

Distance2.53 million light-years (0.78 Mpc)
Distance methodLVDB (RR Lyrae, TRGB or other)
Supergalactic coordinatesSGL 333.1°, SGB +11.4°
Absolute magnitude (V)-11.3
Stellar mass5.89 × 10⁶ 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

Andromeda I is a dwarf spheroidal galaxy (dSph) about 2.40 million light-years away in the constellation Andromeda. Andromeda I is part of the local group of galaxies and a satellite galaxy of the Andromeda Galaxy (M31). It is roughly 3.5 degrees south and slightly east of M31.

Excerpt from the Wikipedia article Andromeda I, licensed CC BY-SA 4.0.

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