Does anyone know the last planet discovered after pluto and where is it...?

Answer 1

The last planet discovered after Pluto is officially named Eris, but it was originally named 2003 UB and then was nicknamed Xena. The discovery of Eris caused Pluto to be demoted from the class of planets by a vote of the IAU last August. Because Eris is five percent bigger than Pluto, apparently astronomers felt that it wouldn't make sense to call Pluto a planet unless Eris is also called a planet. So they invented a new "dwarf planet" class to which Eris was assigned and to which Pluto was demoted. This new class also includes the asteroid Ceres. Both Pluto and Eris are located near the edge of the solar system near a large group of objects called the Kuiper Belt objects and both are more distant than any solar system planets from the sun.

Answer 2

The planet, which hasn't been officially named yet, was found by Brown and colleagues using the Samuel Oschin Telescope at Palomar Observatory near San Diego. It is currently about 97 times farther from the sun than Earth, or 97 Astronomical Units (AU). For comparison, Pluto is 40 AU from the sun.
This places the new planet more or less in the Kuiper Belt, a dark realm beyond Neptune where thousands of small icy bodies orbit the sun. The planet appears to be typical of Kuiper Belt objects--only much bigger. Its sheer size in relation to the nine known planets means that it can only be classified as a planet itself, Brown says.
Backyard astronomers with large telescopes can see the new planet. But don't expect to be impressed: It looks like a dim speck of light, visual magnitude 19, moving very slowly against the starry background. "It is currently almost directly overhead in the early-morning eastern sky in the constellation Cetus," notes Brown.

The planet was discovered by, in addition to Brown, Chad Trujillo, of the Gemini Observatory in Mauna Kea, Hawaii, and David Rabinowitz, of Yale University, New Haven, Connecticut. They first photographed the new planet with the 48-inch Samuel Oschin Telescope on October 31, 2003. The object was so far away, however, that its motion was not detected until they reanalyzed the data in January of this year. In the last seven months, the scientists have been studying the planet to better estimate its size and its motions.

"We are 100 percent confident that this is the first object bigger than Pluto ever found in the outer solar system," Brown adds.

Telescopes have not yet revealed the planet's disk. To estimate how big it is, the astronomers must rely on measurements of the planet's brightness. Like all planets, this new one presumably shines by reflecting sunlight. The bigger the planet, generally speaking, the bigger the reflection. The reflectance, the fraction of light that bounces off the planet, is not yet known. Nevertheless, it is possible to set limits on the planet's diameter:

"Even if it reflected 100 percent of the light reaching it, it would still be as big as Pluto," says Brown. Pluto is 1400 miles (2300 km) wide. "I'd say it's probably [about] one and a half times the size of Pluto, but we're not sure."

The planet's temporary name is 2003 UB313. A permanent name has been proposed by the discoverers to the International Astronomical Union, and they are awaiting the decision of this body before announcing the name.

Answer 3

Eris, also designated (136199) Eris or 136199 Eris
- originally 2003 UB313 - is 97 times 93 million miles (about 150 million kilometres) from the Sun, is designated a dwarf planet.

If this is the one you're asking about - there is more info at wikipedia.org links below.

Eris was discovered by the team of Mike Brown, Chad Trujillo, and David Rabinowitz on January 5, 2005, from images taken on October 21, 2003. The discovery was announced on July 29, 2005, the same day as two other large TNOs, (136108) 2003 EL61 and (136472) 2005 FY9.

Eris is named after the goddess Eris (Greek Ἔρις), a personification of strife and discord.[9]
This name was assigned on September 13, 2006 following an unusually long period in which it was best known by the provisional designation 2003 UB313, which was granted automatically by the IAU under their naming protocols for minor planets.

Eris has an orbital period of 556.7 years, and currently lies at almost its maximum possible distance from the Sun (aphelion). It is currently the most distant known solar system object from the Sun at a distance of roughly 97 astronomical units. Its semimajor axis is 67.669 AU, its perihelion distance is 37.78 AU, and its aphelion distance is 97.56 AU. Approximately forty known TNOs (most notably 2000 OO67 and Sedna), while currently closer to the Sun than Eris, have greater average orbital distances.[16

The astronomical unit (AU or au or a.u. or sometimes ua) is a unit of length nearly equal to the semi-major axis of Earth's orbit around the Sun. The currently accepted value of the AU is 149 597 870 691 ± 30 metres (about 150 million kilometres or 93 million miles).

Answer 4

The astrological world is abuzz about the planet Sedna. This tiny planet is so remote that if you were standing on Sedna, you could cover the disc of the Sun with the head of a pin. Astrologers are already discussing the possible significance of this new factor in our solar system, which was discovered in November 2003 but not announced until March 2004.

So how does the astrological community sort out the meaning of newly discovered bodies? Well, they've had a little practice at it, what with the relatively recent discovery of three major planets, four major asteroids and many thousands of smaller asteroids, as well as smaller bodies such as Chiron, discovered in 1977. The implications of a new planet like Sedna are determined through research of its unique qualities and observation of it in the existing astrological scheme. Astrologers will now begin to look at Sedna's actual transits, natal chart placements and so forth -- in other words, they'll let the planet speak for itself.

The name assigned by astronomers is also considered. Though not selected for any astrological meaning, these names are often associated with mythology that proves to be pertinent to the energy of the new planet. In this case, Sedna is named after the Inuit ocean goddess. Her story has a number of variations; in one version, the lovely young princess is trapped and married off to a bird that carries her to a remote island. Her distraught father rows to the island and rescues her. However, the magic bird pursues them, and in a panic, Sedna's father throws her overboard to save himself. When she tries to climb back aboard, her father chops off her fingers, leaving her to perish in the ocean. Each of her fingers becomes a different ocean animal, the grandest of which is the whale. Sedna rules over the ocean and all ocean animals. Her story suggests that the planet's realm is a deep and remote one, but one that is inextricably linked to the universe, just as the ocean is part of the Earth.

The physical qualities of the planet itself are contemplated as well. Sedna is tiny, far-flung and very, very cold. Her orbit takes over 10,000 years. This suggests that Sedna will not manifest powerfully on an individual level, but may have important meanings about broader events, such as major stages of human development or climate change.

Finally, the global events around the time of the discovery of the new planet are examined. The idea here is that a planet is 'found' at a point in time when it's important for its energies to be recognized. A major astronomical event occurred only days before Sedna was discovered: the harmonic concordance, a very rare and beautiful planetary alignment. The concordance acted like an aperture, allowing an influx and outflow of energy here on earth. Although we did not know it at the time, this event provided the opportunity for the detection of the new planet, which is now at perihelion, or its closest point to the Sun. This exceedingly infrequent event -- along with other major galactic events, such as the Mayan end date of 2012 signifying the alignment of the winter equinox with the Milky Way -- demonstrates that humanity as a whole is in an extraordinary and crucial period of time. It's early to make any assessments, but indications are that eco-awareness or environmental consciousness (especially as these concepts relate to the ocean) may prove to be a major theme with Sedna.

Answer 5

It is given the name Sedna. You can search google with this.

Answer 6

in a galaxy far far away..................