Map of the Universe

NGC 147

Dwarf galaxy · Galaxy in the constellation Cassiopeia

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NGC 147
Picture: NASA Hubble Space Telescope, CC BY 2.0, via Wikimedia Commons.

About NGC 147

NGC 147 is about 2.40 million light-years from the Sun, so the light we see from it left about 2.40 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

Distance2.40 million light-years (0.73 Mpc)
Distance methodLVDB (RR Lyrae, TRGB or other)
Supergalactic coordinatesSGL 343.3°, SGB +15.3°
Absolute magnitude (V)-16.6
Stellar mass7.24 × 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

NGC 147 (also known as DDO3 or Caldwell 17) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia. NGC 147 is a member of the Local Group of galaxies and a satellite galaxy of the Andromeda Galaxy (M31). It forms a physical pair with the nearby galaxy NGC 185, another remote satellite of M31.

Excerpt from the Wikipedia article NGC 147, licensed CC BY-SA 4.0.

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