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

A Hubble Space Telescope image of M31's "˜double nucleus."™ The two bright blobs of stars may encircle a supermassive black hole. [NASA/STScI]

This document was last modified: October 21, 2005.