NGC 7657

NGC 7657

NGC 7657 is a spiral galaxy in the constellation Tucana about 149 million ly from Earth. It spans roughly 63,000 ly, about 63% of our Milky Way's width. It is receding from us at about 3,135 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sd
149 million ly
from Earth · from redshift
63k ly
across
15.0
apparent magnitude
3,135 km/s
receding (RC3)

Because its light is 149 million ly from home, you are seeing NGC 7657 as it looked roughly 149 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
NGC 7702Lenticular5.6 million ly
apart
NGC 7650Barred spiral9.2 million ly
apart
NGC 7676Elliptical10 million ly
apart
NGC 7796Elliptical16 million ly
apart
NGC 7417Barred spiral21 million ly
apart
IC 5266Barred spiral21 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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