NGC 3665

NGC 3665

NGC 3665 is a lenticular galaxy in the constellation Ursa Major about 93 million ly from Earth. It spans roughly 110,000 ly, about the width of our Milky Way. It is receding from us at about 2,061 km/s.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0
93 million ly
from Earth · from redshift
110k ly
across
10.8
apparent magnitude
2,061 km/s
receding (RC3)

Because its light is 93 million ly from home, you are seeing NGC 3665 as it looked roughly 93 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 3652Spiral1.8 million ly
apart
NGC 3658Lenticular2.4 million ly
apart
NGC 3648Lenticular3.3 million ly
apart
NGC 3694Elliptical11 million ly
apart
IC 2957Lenticular16 million ly
apart
NGC 3583Barred spiral16 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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