Alternate Names

Nova Cygni 1989, GS 2023+338

Type

Stellar mass

Location

in the constellation Cygnus

Finder Chart

Distance

7,800 light-years (2400 parsecs)

Mass

10 to 15 times the mass of the Sun

Size

Diameter roughly 37-56 miles (60-90 km)

Discovery Methods

• Detection of a jet
• Measuring the motions of a companion star

Detection of a jet

More about black hole discovery methods »

This document was last modified: June 13, 2011.