NGC 1645
NGC 1645
Illustration from its catalogued shape, not a photograph
Lenticular
type · S0-a
225 million ly
from Earth · from redshift
142k ly
across
14.0
apparent magnitude
Because its light is 225 million ly from home, you are seeing NGC 1645 as it looked roughly 225 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 1643Barred spiral4.5 million ly
apartIC 389Elliptical7.5 million ly
apartIC 390Lenticular9.2 million ly
apartIC 2097Irregular9.9 million ly
apartNGC 1625Barred spiral11 million ly
apartNGC 1622Spiral12 million ly
apart
Worlds in the same direction on the sky→apartIC 389Elliptical7.5 million ly
apartIC 390Lenticular9.2 million ly
apartIC 2097Irregular9.9 million ly
apartNGC 1625Barred spiral11 million ly
apartNGC 1622Spiral12 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).