ภาพ:Oort cloud Sedna orbit.jpg
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source: http://photojournal.jpl.nasa.gov/catalog/PIA05569
These four panels show the location of trans-Neptunian object 90377 Sedna, which lies in the farthest reaches of the Solar system. Each panel, moving clockwise from the upper left, successively zooms out to place Sedna in context.
The first panel shows the orbits of the inner planets and Jupiter; and the asteroid belt.
In the second panel, Sedna is shown well outside the orbits of Neptune and the Kuiper belt objects.
Sedna's full orbit is illustrated in the third panel along with the object's location in 2004, nearing its closest approach to the Sun.
The final panel zooms out much farther, showing that even this large elliptical orbit falls inside what was previously thought to be the inner edge of the spherical Oort cloud: a distribution of cold, icy bodies lying at the limits of the Sun's gravitational pull. Sedna's presence suggests that the previously speculated inner disk on the ecliptic does exist.
Image courtesy of NASA / JPL-Caltech / R. Hurt
Original text courtesy of NASA / JPL-Caltech
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This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).
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[edit] References
- JPL. Most Distant Object in Solar System Discovered. Press release: Jet Propulsion Laboratory. March 15, 2004.
[edit] Source of image
Taken on March 15, 2004 from [4]: Splitzer Space Telescope Released Images about Sedna
[edit] Similar images on Wikipedia
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