The NGC 581 is a open cluster in the constellation Cassiopeia, located about 8,000 light-years from Earth. With an apparent size of 5.0' and a magnitude of 7.4, it is best observed during autumn.

Under dark skies, this object is considered Easy to observe with small amateur telescopes.

Type

Open Cluster

Constellation

Cassiopeia

Distance

8000 ly

Size

5.0'

Season

Autumn

Difficulty

Easy

Magnitude

7.4