Type

Intermediate mass

Location

In the constellation Ursa Major

Finder Chart

Distance

11 million light-years (3.4 megaparsecs)

Mass

Approximately 1,000 times the mass of the Sun

Size

Diameter equal to the size of Mars

Discovery Methods

• Detection of an accretion disk

A ground-based view of M82. [N.A. Sharp/NOAO/AURA/NSF]

This document was last modified: August 29, 2011.