NGC 4121

NGC 4121

NGC 4121 is an elliptical galaxy in the constellation Draco about 102 million ly from Earth. It spans roughly 15,000 ly, about 15% of our Milky Way's width. It is receding from us at about 2,197 km/s.

Illustration from its catalogued shape, not a photograph

Elliptical
type · E
102 million ly
from Earth · from redshift
15k ly
across
13.0
apparent magnitude
2,197 km/s
receding (RC3)

Because its light is 102 million ly from home, you are seeing NGC 4121 as it looked roughly 102 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 4108ABarred spiral5.3 million ly
apart
NGC 4513Lenticular6.5 million ly
apart
NGC 4481Spiral8.1 million ly
apart
NGC 4120Spiral8.3 million ly
apart
NGC 4128Lenticular9.4 million ly
apart
NGC 4250Lenticular10 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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