what about new planets?

Question

people say xena,charon,cheres.
but in paper it's pluto-charon
but pluto planet is reduced in our solar system

Answer 1

The IAU had asked a panel of seven astronomers, writers, and historians to better define what constitutes a planet. According to that panel's proposal, announced this week in Prague, a planet is any body that orbits a star, is neither a star nor a satellite of a planet, and has gravity strong enough to pull it into a rounded shape.

"We finally have a definition of a planet after 2,500 years, and I applaud any definition that gives us an unambiguous answer," says Neil deGrasse Tyson, director of the Hayden Planetarium in New York City.

According to the panel's proposal, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune would make up the classical planets. Ceres would be the lone member of a group termed dwarf planets.

Pluto, Charon, and 2003 UB313 would form a new class, the icy plutons.
VR

Answer 2

The International Astronomical Union defines "planet" as a celestial body that, within the Solar System,

(a) is in orbit around the Sun;
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape; and
(c) has cleared the neighbourhood around its orbit;
or within another system,

(i) is in orbit around a star or stellar remnants;
(ii) has a mass below the limiting mass for thermonuclear fusion of deuterium; and
(iii) is above the minimum mass/size requirement for planetary status in the Solar System.
Our solar system is thus considered to have eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Under a separate resolution, it is also considered to have three dwarf planets: Ceres, Pluto, and Eris. There have been more than two hundred planets discovered orbiting other stars to date.

Historically, there had been no formal scientific definition of "planet" and without one, the Solar System had been considered to have various planets over the years. This changed when a resolution covering planets within our solar system was formally adopted by the IAU in 2006, limiting the number to eight. However, the IAU's position on those in other systems remains only a working definition in place since 2003, and as such, is easily subject to change. The IAU has not yet taken a position on free-floating objects of planetary mass outside star systems, other than to exclude those in young star clusters.

Answer 3

No new planets. When scientists found a new object farther than pluto and big in size than pluto, they reduced the planet post of pluto and placed in secondary planet list. They did this because, pluto is even smaller than our moon and its satellite charon is as big as pluto.

Answer 4

Xena is a planet i agree

Charon is the moon of Pluto

Answer 5

These aren't new planets. They would have been classed planets along with UB313 if Pluto kept the class has a planet. It didn't so none of these ones got added to that list.

Answer 6

u see pluto and charon have been declared dwarf planets recently.ceres is the largest dwarf planet.xena is also a dwarf planet.pluto-charon joins the group.

Answer 7

I think the next newly discovered planet should be called Sponge Bob. Why does it has to be some Greek name?

Answer 8

there are never any new planets .only new discoveries
all the planets have been here for ever