NGC 7655

NGC 7655

NGC 7655 is a lenticular galaxy in the constellation Indus about 182 million ly from Earth. It spans roughly 40,000 ly, about 40% of our Milky Way's width. The light reaching us tonight left it about 182 million years ago.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0
182 million ly
from Earth · from redshift
40k ly
across
14.2
apparent magnitude

Because its light is 182 million ly from home, you are seeing NGC 7655 as it looked roughly 182 million years ago. The photons left before that much of history had passed, and are only now reaching us. This distance is estimated from the galaxy's redshift, so the lookback time is approximate.

Nearest galaxies
IC 5324Elliptical940,000 ly
apart
IC 5320Lenticular1.3 million ly
apart
IC 5323Lenticular3.1 million ly
apart
IC 5335Lenticular3.7 million ly
apart
NGC 7633Lenticular7.2 million ly
apart
IC 5279Spiral7.9 million ly
apart
Worlds in the same direction on the sky

Source: structural data (position, morphology, brightness, redshift) from OpenNGC (CC BY-SA). Recession velocity from RC3 (de Vaucouleurs et al. 1991, via NASA/HEASARC, public domain). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).

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