NGC 7550

NGC 7550

NGC 7550 is an elliptical galaxy in the constellation Pegasus about 242 million ly from Earth. It spans roughly 100,000 ly, about the width of our Milky Way. It is receding from us at about 5,101 km/s.

Illustration from its catalogued shape, not a photograph

Elliptical
type · E-S0
242 million ly
from Earth · from redshift
102k ly
across
13.2
apparent magnitude
5,101 km/s
receding (RC3)

Because its light is 242 million ly from home, you are seeing NGC 7550 as it looked roughly 242 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 7547Spiral430,000 ly
apart
NGC 7553Elliptical1.6 million ly
apart
NGC 7516Lenticular10 million ly
apart
NGC 7549Spiral22 million ly
apart
NGC 7509Elliptical23 million ly
apart
NGC 7511Barred spiral25 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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