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2003 – Astronomers discover the asteroid Sedna.
Sedna (formerly 2003 VB12) was discovered by Michael E. Brown (California Institute of Technology), Chad Trugelo (Gemini Observatory) and David Rabinowitz (University of Technology). Yale) on November 14, 2003. The discovery was part of an investigation that began in 2001 with the Samuel Oschin Telescope at the Palomar Observatory. Near San Diego California Using a 160 megapixel camera from Yale University. That day, the object was found to have traveled 4.6 minutes, taking 3.1 hours relative to the star. This gives an estimate that the object is approximately 100 AU away.
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