What is the farthest planet observed now? Constellation don't

In 2003, the planet UB 3 13 was about 145 billion kilometers away from the sun, which was 97 times the distance between the earth and the sun and 3 times the distance between Pluto and the sun.

This planet is the farthest known planet in the solar system. It only orbits the sun once every 560 years.

It is impossible to detect the exact size of this planet at present. However, according to its brightness, it is estimated that its diameter may be 1.5 times that of Pluto, and the upper limit is about 3000 kilometers. This planet is very similar to Pluto and is made of solid methane.

This planet has not been noticed before because its orbital plane makes an angle of 45 degrees with that of other planets, and it looks "unpredictable" on the earth. Now, amateur astronomical observers can see the planet in Ceylon constellation in the east of the sky in the early hours of the morning.

It is understood that on June 365438+1October 3 1 day, 2003, Brown and two colleagues took photos of this planet for the first time at the Paloma Observatory in California, but they have never been able to observe its orbit.

It was not until June 5438 +2005 10 that they analyzed the data again and observed the operation of this mysterious star.

It is understood that this research is funded by NASA. Brown has submitted the name of "Planet 10" to the International Astronomical Association, and is waiting for approval.

Earlier, astronomers claimed to have found a star brighter than Neptune, but it was later confirmed to be smaller than Pluto.