They were calling it 2003UB313, now they are calling it Eris.
The name uranium is derived from the name of the planet Uranus.The name was chosen by Klaproth in 1789 because recently the planet was discovered.
It seems there may have been a misunderstanding. There is no planet named Xena that has been recently discovered. The most recently discovered planet in our solar system is named 2018 VG18, also known as Farout.
The name of the natural radioactive chemical element uranium is derived from the name of the planet Uranus. Uranium was discovered (as an oxide) by Martin Heinrich Klaproth in 1789.
As of right now, there is no tenth planet in our solar system. There are only 8, as Pluto is no longer considered a planet.
the tenth planet official name is2003 UB313 but it has nick name xena.
sedna
FY9 is another name for the dwarf planet Makemake. Discovered March 31, 2005
The small bug with long antennae that I recently discovered in my garden is called a "silverfish."
Uranus
galaleo
The planet Mercury was discovered around 3,500 years ago, Unfortunately the name of the person who discovered it was not recorded.
There are only 8 planets, you may be referring to a dwarf planet. Please be more specific.