Giant Planet Found In Oort Cloud On March , 2013

By Alton Parrish (Reporter)
Has Tyche Been Found? Planet X Ejected From Another Solar System, Giant Planet 4X Larger Than Jupiter In Oort Cloud Sought By Astronomers
Friday, March 8, 2013 10:42
(Before It's News)
In November 2010, the scientific journal Icarus published a paper by astrophysicists John Matese and Daniel Whitmire, who proposed the existence of a binary companion to our sun, larger than Jupiter, in the long-hypothesized "Oort cloud" -- a faraway repository of small icy bodies at the edge of our solar system. The researchers use the name "Tyche" for the hypothetical planet. Their paper argues that evidence for the planet would have been recorded by the Wide-field Infrared Survey Explorer (WISE). Has that giant planet or dwarf star been found?
In a word, no. Not yet. They are still looking. There is no brown dwarf entering our solar system. That is a misinterpretation of the work of astrophysicists John Matese and Daniel Whitmire.
The WISE mission's discoveries of previously unknown objects so far includes include an ultra-cold star or brown dwarf, 20 comets, 134 near-Earth objects (NEOs), and more than 33,000 asteroids in the main belt between Mars and Jupiter.
Is it a certainty that WISE would have observed such a planet if it exists?
It is likely but not a foregone conclusion that WISE could confirm whether or not Tyche exists. Since WISE surveyed the whole sky once, then covered the entire sky again in two of its infrared bands six months later, WISE would see a change in the apparent position of a large planet body in the Oort cloud over the six-month period. The two bands used in the second sky coverage were designed to identify very small, cold stars (or brown dwarfs) -- which are much like planets larger than Jupiter, as Tyche is hypothesized to be.
If Tyche does exist, why would it have taken so long to find another planet in our solar system?
Tyche would be too cold and faint for a visible light telescope to identify. Sensitive infrared telescopes could pick up the glow from such an object, if they looked in the right direction. WISE is a sensitive infrared telescope that looks in all directions.
As of December 2012, projects planned for the enhanced WISE data include the search for nearby, hidden cool stars, including those with masses as low as planets. If a large planet or tiny star does exist close to our solar system, an object some call "Tyche," then WISE's infrared data may reveal it.
This colorful picture is a mosaic of the Lagoon nebula taken by NASA's Wide-field Infrared Survey Explorer, or WISE.
Tyche is the nickname given to a hypothetical gas giant located in the Solar System's Oort cloud, first proposed in 1999 by astronomer John Matese of the University of Louisiana at Lafayette. Matese and his colleague Daniel Whitmireargue that evidence of Tyche's existence can be seen in a supposed bias in the points of origin for long-period comets. For a scientific paper on Tyche
They noted that Tyche, if it exists, should be detectable in the archive of data that was collected by NASA's Wide-field Infrared Survey Explorer (WISE) telescope. However, several astronomers have voiced skepticism of this object's existence. Analysis over the next couple of years will be needed to determine if WISE has actually detected such a world or not
Matese first proposed the existence of this planet in 1999, based on his observations of the orbits of long-period comets. Most astronomers agree that long-period comets (those with orbits of thousands of years) have an isotropic distribution; that is, they arrive at random from every point in the sky. Because comets are volatile and dissipate over time, astronomers suspect that they must be held in a spherical cloud tens of thousands of AU distant (known as the Oort cloud) for most of their existence.
However, Matese claimed that rather than arriving from random points across the sky as is commonly thought, comet orbits were in fact clustered in a band inclined to the orbital plane of the planets. Such clustering could be explained if they were disturbed by an unseen object at least as large as Jupiter, possibly a brown dwarf, located in the outer part of the Oort cloud. He also suggested that such an object might also explain the trans-Neptunian object Sedna's peculiar orbit. However, his sample size was small and the results were inconclusive.
Orbit
Whitmire and Matese speculate that Tyche's orbit would lie at approximately 500 times Neptune's distance; equivalent to 15,000 AU (2.2×1012 km) from the Sun, a little less than one quarter of a light year. This is still well within the Oort cloud, whose boundary is estimated to be beyond 50,000 AU. It would have an orbital period of roughly 1.8 million years.
A failed search of older IRAS data suggests that an object of 5 MJ would need to have a distance greater than 10,000 AU. Such a planet would orbit in a different plane in orientation to our current planet orbits,[13] and probably formed in a wide-binary orbit. Wide binaries may form through capture during the dissolution of a star's birth cluster.
Mass
General size comparison between the Sun, a low-mass star, a brown dwarf, and the planets Jupiter and Earth.
Credit: NASA
CNN did not actually report a brown dwarf entering our solar system, they reported on the hypothetical planet Tyche.
Whitmire and Matese speculate that the hypothesized planet could be up to four times the mass of Jupiter and have a relatively high temperature of approximately 200 K[3] (−73C), due to residual heat from its formation and Kelvin-Helmholtz heating. It would be insufficiently massive to undergo nuclear fusion reactions in its interior, a process which occurs in objects above roughly 13 Jupiter masses.
▼ more here

Before It's News
http://beforeitsnews.com/space/2013/03/has-tyche-been-found-giant-planet-4x-larger-than-jupiter-in-oort-cloud-2455856.html