Alternate Names

NGC 224

Type

Supermassive

Location

in the constellation Andromeda

Finder Chart

Distance

2.5 million light-years (0.78 megaparsecs)

Mass

30 million times the mass of the Sun

Size

Diameter roughly equal to the orbit of Venus.

Discovery Methods

• Measuring the motions of stars

1

X-ray images show the center of the Andromeda galaxy before (left) and after a flare-up in early 2006. The black hole is inside the top blob. [NASA/CXC/SAO/Li et al.]

This document was last modified: May 28, 2010.