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News Release Archive:

News Release 23 of 44

June 14, 2007 01:00 PM (EDT)

News Release Number: STScI-2007-24

Astronomers Measure Mass of Largest Dwarf Planet

Technical facts about this news release:

About the Object
Object Name: Eris, 2003 UB313
Object Description: Dwarf Planet with Satellite
Position (J2000) on
August 30, 2006:
R.A. 01h 39m 24s.34
Dec. -05° 10' 11".0
Distance: 10 billion miles away (16 billion kilometers)
About the Data
Data Description: This image was created from HST data from proposals 10759: M. Brown (California Institute of Technology), D. Rabinowitz (Yale University) and C. Trujillo (Gemini Observatory); and 10860: M. Brown, H. Roe, K. Barkume, and E. Schaller (California Institute of Technology)
Instrument: ACS/HRC
Exposure Date(s): December 9/10, 2005; August 30, 2006
Exposure Time: 4.3 hours
Filters: F435W(B), F606W(V)
About the Image
Image Credit: NASA, ESA, and M. Brown (Caltech)
Release Date: June 14, 2006
Orientation: Hubble View of Eris and Dysnomia (Annotated)