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News Release Archive:

News Release 47 of 181

June 14, 2007 01:00 PM (EDT)

News Release Number: STScI-2007-24

Astronomers Measure Mass of Largest Dwarf Planet

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Image: Hubble View of Eris and Dysnomia (Unannotated)

Hubble View of Eris and Dysnomia (Unannotated)

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ABOUT THIS IMAGE:

This is an image of the dwarf planet Eris (center) and its satellite Dysnomia (at 9 o'clock position) taken with NASA's Hubble Space Telescope on Aug. 30, 2006. Hubble observations were obtained on Dec. 3, 2005 and Aug. 30, 2006 using the Advanced Camera for Surveys. The Hubble images were combined with images from the Keck telescopes taken on Aug. 20, 21, 30, and 31 to measure the satellite's orbit and calculate a mass for Eris, which is the largest dwarf planet in the solar system.

Object Names: Eris, 2003 UB313

Image Type: Astronomical

Credit: NASA, ESA, and M. Brown (California Institute of Technology)

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The above image is part of a montage:

Montage Image: Hubble View of Eris and Dysnomia Image Type: Astronomical/Illustration Hubble View of Eris and DysnomiaPRC2007-24 Hubble View of Eris and Dysnomia (Annotated) Image Type: Astronomical/Illustration Hubble View of Eris and Dysnomia (Annotated)

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