Summary

The smaller object is the Gliese 229B brown dwarf orbiting the star Gliese 229 , which is located in the constellation Lepus about 19 light years from Earth. Gliese 229B is about 20 to 50 times the mass of Jupiter.

Source

• NASA: http://starchild.gsfc.nasa.gov/Images/StarChild/questions/brown_dwarf.jpg
• Hubblesite STScI-1995-48: Astronomers Announce First Clear Evidence of a Brown Dwarf (November 29, 1995)

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