Type

Stellar mass

Location

In the constellation Ara

Distance

26,000 light-years

Mass

3.8 times the mass of the Sun

Size

Diameter 14 miles (23 km)

Discovery Methods

• Detection of an accretion disk
• Measuring the motions of gas

An artist's concept depicts Rossi X-Ray Timing Explorer in orbit. [NASA]

This document was last modified: June 27, 2008.