NGC 4725

NGC 4725

NGC 4725 is a spiral galaxy in the constellation Coma Berenices about 56 million ly from Earth. It spans roughly 160,000 ly, about 1.6 times the width of our Milky Way. It is receding from us at about 1,180 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · SABa
56 million ly
from Earth · from redshift
159k ly
across
9.4
apparent magnitude
1,180 km/s
receding (RC3)

Because its light is 56 million ly from home, you are seeing NGC 4725 as it looked roughly 56 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 4747Barred spiral1,000,000 ly
apart
IC 3571Irregular3.2 million ly
apart
Needle GalaxyBarred spiral4.1 million ly
apart
NGC 4670Barred spiral5.9 million ly
apart
NGC 4525Spiral6.0 million ly
apart
IC 3334Irregular6.1 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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