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Sedna (minor-planet designation: 90377 Sedna) is a dwarf planet in the outermost reaches of the Solar System, orbiting the Sun beyond the orbit of Neptune. Discovered in 2003, the planetoid's surface is one of the reddest known among Solar System bodies.
One particularly distant body is 90377 Sedna, which was discovered in November 2003.It has an extremely eccentric orbit that takes it to an aphelion of 937 AU. [2] It takes over 10,000 years to orbit, and during the next 50 years it will slowly move closer to the Sun as it comes to perihelion at a distance of 76 AU from the Sun. [3] Sedna is the largest known sednoid, a class of objects that ...
90377 Sedna, a large trans-Neptunian object, had the provisional designation 2003 VB 12, meaning it was identified in the first half of November 2003 (as indicated by the letter "V"), and that it was the 302nd object identified during that time, as 12 cycles of 25 letters give 300, and the letter "B" is the second position in the current cycle.
These four panels show the location of trans-Neptunian object 90377 Sedna, which lies in the farthest reaches of the Solar System. [1] 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.
Sedna is a trans-Neptunian object with the asteroid number 90377. It was discovered on November 14, 2003 by astronomers Michael Brown , Chad Trujillo , and David Rabinowitz . Sedna is currently 88 Astronomical units (AU) from the Sun , which is three times the distance between Neptune and the Sun. Sedna's orbit is an ellipse and its aphelion is ...
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The NASA image is not the same as the uploaded image (note the bright object to the left of Sedna is below Sedna in the NASA image(s), but well above it in the uploaded image). The uploaded image is from Caltech and, as the source is a direct link to the image itself (a problem in itself), there's no authorship attribution.
Hubble Space Telescope image of Sedna 90377 Sedna is a trans-Neptunian object currently about three times as far from the Sun as Neptune . For the majority of its orbit it is the most distant known object in the Solar System other than long-period comets .