NGC 6821
NGC 6821
Illustration from its catalogued shape, not a photograph
Spiral
type · Scd
70 million ly
from Earth · from redshift
21k ly
across
13.1
apparent magnitude
Because its light is 70 million ly from home, you are seeing NGC 6821 as it looked roughly 70 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 6814Spiral5.2 million ly
apartNGC 6835Barred spiral9.7 million ly
apartNGC 6836Spiral9.9 million ly
apartIC 5078Spiral26 million ly
apartNGC 7077Elliptical34 million ly
apartNGC 6509Spiral41 million ly
apart
Worlds in the same direction on the sky→apartNGC 6835Barred spiral9.7 million ly
apartNGC 6836Spiral9.9 million ly
apartIC 5078Spiral26 million ly
apartNGC 7077Elliptical34 million ly
apartNGC 6509Spiral41 million ly
apart
Source: structural data (position, morphology, brightness, redshift) from OpenNGC (CC BY-SA). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).