NGC 1665

NGC 1665

NGC 1665 is a lenticular galaxy in the constellation Eridanus about 128 million ly from Earth. It spans roughly 67,000 ly, about 67% of our Milky Way's width. It is receding from us at about 2,736 km/s.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0
128 million ly
from Earth · from redshift
67k ly
across
14.1
apparent magnitude
2,736 km/s
receding (RC3)

Because its light is 128 million ly from home, you are seeing NGC 1665 as it looked roughly 128 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 1677Lenticular1.9 million ly
apart
NGC 1681Barred spiral2.1 million ly
apart
NGC 1666Lenticular2.7 million ly
apart
IC 2095Spiral4.8 million ly
apart
IC 2098Spiral6.1 million ly
apart
NGC 1843Spiral19 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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