Alternate Names

Mayall II

Type

Intermediate mass

Location

near the Andromeda galaxy (M31)

Finder Chart

Distance

2.3 million light-years (0.76 megaparsecs)

Mass

14,000 to 23,000 times the mass of the Sun

Size

52,000-86,000 miles (84,000-138,000 km), roughly equivalent to the diameter of Jupiter

Discovery Methods

• Measuring the motions of stars

1

Animation takes you into the heart of G1 to view its central black hole. [NASA/G. Bacon (STScI)]

This document was last modified: January 19, 2006.