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

A Hubble Space Telescope view of the star cluster G1, which orbits the center of the Andromeda galaxy. The bright stars above the cluster are foreground stars inside the Milky Way galaxy. [NASA/M. Rich (UCLA)]

This document was last modified: January 19, 2006.