90377 Sedna - Wikipedia, the free encyclopedia
90377 Sedna is a trans-Neptunian object and a likely dwarf planet discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003...
en.wikipedia.org/wiki/90377_Sedna
New planetoid Sedna discovered; (AP); Updated: 2004-03-17 01:14 ... An artist's rendering shows the recently discovered planetoid Sedna in relation to other bodies in the solar system, including Earth and its Moon; Pluto; and Quaoar, a planetoid beyond Pluto that was until now the largest known object beyond Pluto.
www.chinadaily.com.cn/english/doc/2004-03/17/content_31... www.chinadaily.com.cn/english/doc/2004-03/17/content_315379.htm
The distant planetoid Sedna appears to be covered in a tar-like sludge that gives it a distinctly red hue, a new study reveals. The findings suggests the dark crust was baked-on by the Sun and has been untouched by other objects for millions of years.
www.newscientist.com/article/dn7272
But the real mystery is what Brown didn't find after two years of searching with giant telescopes - objects like Sedna, the 1300- to 1800-kilometre-wide body with the largest known orbit around the Sun. Its nearest approach to the Sun is 76 AU, so far away that no known object in the solar system could have put it there.
www.newscientist.com/blogs/shortsharpscience/2008/12/di... www.newscientist.com/blogs/shortsharpscience/2008/12/distant-planetoid-sedna-still.html
It's what HST did not find that keeps Sedna mysterious. There is no evidence for a moon, and the planetoid is even too small for Hubble to resolve.
hubblesite.org/newscenter/archive/releases/2004/14/
Screen-use options ... See all Gallery Search Results for 2003 VB16, Sedna, K31114A ... Plot of Planetoid Sedna's Apparent Motion through Space from 2003 to 2005...
hubblesite.org/gallery/album/solar_system/pr2004014c/
New planetoid named Sedna discovered; News story originally written on March 17, 2004 ... Astronomers have discovered a new planetoid at the far edge of our Solar System. The new object, named Sedna, is probably almost as big as the smallest planet, Pluto.
www.windows.ucar.edu/tour/link=/headline_universe/solar... www.windows.ucar.edu/tour/link=/headline_universe/solar_system/stories_2004/sedna_planetoid_march2004.html
; Drawing by Rita Lee based on an Inuit mask depicting the sea goddess Sedna. ... A large planetoid discovered in November 2003 has been named after Sedna. The planetoid orbits on the cold, outer fringe of our Solar System.
www.windows.ucar.edu/tour/link=/mythology/sedna.html&ed... www.windows.ucar.edu/tour/link=/mythology/sedna.html&edu=high
Boulder CO (SPX) Jan 12, 2005 - Recently, astronomers reported the surprising discovery of a very large diameter Kuiper Belt planetoid - (90377) Sedna - on a distant, 12,500-year-long, eccentric orbit centered approximately 500 astronomical units from the Sun. ... Sedna's estimated diameter is about 1,600 km, two-thirds that...
www.spacedaily.com/reports/SwRI_Researchers_Show_Planet... www.spacedaily.com/reports/SwRI_Researchers_Show_Planetoid_Sedna_May_Have_Formed_Far_Beyond_Pluto.html
Brown describes it as the most distant object ever found to be orbiting the Sun. At 9.7 billion miles, Eris is three times farther from the Sun than Pluto, which averages 3.6 billion miles from the Sun. The newly-discovered object is more distant than the mysterious planetoid Sedna discovered in 2003.
www.spacetoday.org/SolSys/KuiperBelt/Quaoar.html
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