IC 3644
IC 3644
Illustration from its catalogued shape, not a photograph
Barred spiral
type · SBb
307 million ly
from Earth · from redshift
81k ly
across
16.2
apparent magnitude
Because its light is 307 million ly from home, you are seeing IC 3644 as it looked roughly 307 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
IC 3646Barred spiral1,000,000 ly
apartIC 3618Lenticular1.9 million ly
apartIC 3590Spiral6.3 million ly
apartNGC 4555Elliptical7.0 million ly
apartIC 3620Spiral7.8 million ly
apartIC 3498Spiral9.0 million ly
apart
Worlds in the same direction on the sky→apartIC 3618Lenticular1.9 million ly
apartIC 3590Spiral6.3 million ly
apartNGC 4555Elliptical7.0 million ly
apartIC 3620Spiral7.8 million ly
apartIC 3498Spiral9.0 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).