NGC 639
NGC 639
Illustration from its catalogued shape, not a photograph
Spiral
type · Sa
273 million ly
from Earth · from redshift
83k ly
across
14.1
apparent magnitude
Because its light is 273 million ly from home, you are seeing NGC 639 as it looked roughly 273 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 642Barred spiral3.1 million ly
apartIC 1720Barred spiral12 million ly
apartIC 1719Lenticular19 million ly
apartIC 1762Barred spiral26 million ly
apartNGC 439Elliptical27 million ly
apartNGC 441Lenticular28 million ly
apart
Worlds in the same direction on the sky→apartIC 1720Barred spiral12 million ly
apartIC 1719Lenticular19 million ly
apartIC 1762Barred spiral26 million ly
apartNGC 439Elliptical27 million ly
apartNGC 441Lenticular28 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).