Type

Intermediate mass

Location

In the constellation Phoenix

Distance

290 million light-years (90 megaparsecs)

Mass

Roughly 20,000 times the mass of the Sun

Size

Diameter roughly equal to the diameter of the planet Saturn

Discovery Methods

• Detection of an accretion disk

ESO 243-49 HLX-1

Hubble Space Telescope view of the galaxy ESO 243. The circle indicates the location of HLX-1.

This document was last modified: April 30, 2012.