Do you Agree with International Astronomical Union (IAU)?

Question

Naming Xena(To What was once known as UB 313), Quaoar and Sedna as planets?

Answer 1

I think that it is good to have a uniform way of classifying celestial bodies.

The International Astronomical Union (IAU) may adopt Xena as the name for UB 313. Michael Brown of the California Institute of Technology who discovered the planet nicknamed it Xena after the warrior princess of TV fame. He chose Xena because it would be the 10th planet which is "X" in roman numerals. Gabrielle is the proposed name for the moon of Xena.

The 12 planets in our solar system listed in order of their proximity to the sun would be Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Charon, and Xena (UB313). Pluto's largest moon, Charon; and the asteroid Ceres would be categorized as planets. Pluto would be categorized as both a planet and a pluton. Both Pluto and Charon each are large enough (massive enough) to be spherical. Both bodies independently satisfy the definition of “planet”. The reason they are called a “double planet” is that their common centre of gravity is a point that is located in free space outside the surface of Pluto.

The center of gravity for the Moon's orbit is in the center of the Earth. The Moon truly orbits the Earth.

The new definition of a planet: any round object larger than 800 kilometers (nearly 500 miles) in diameter that orbits the sun and has a mass roughly one-12,000th that of Earth. Moons and asteroids will make the grade if they meet those basic tests.

The growing category of "plutons" - Pluto-like objects that reside in the Kuiper Belt, a mysterious, disc-shaped zone beyond Neptune containing thousands of comets and planetary objects.
Plutons are distinguished from classical planets in that they reside in orbits around the Sun that take longer than 200 years to complete (i.e. they orbit beyond Neptune). Plutons typically have orbits that are highly tilted with respect to the classical planets (technically referred to as a large orbital inclination). Plutons also typically have orbits that are far from being perfectly circular (technically referred to as having a large orbital eccentricity). All of these distinguishing characteristics for plutons are scientifically interesting in that they suggest a different origin from the classical planets.

Answer 2

I think they need to create a firm definition of "planet". I heard an idea being put out about classifying the planets, rather than just changing the list of solar system planets, which would probably be better.

Answer 3

Well, 'Xena' is the unofficial name for UB313. Its not final.

But in the end, I do hope they decide to call it Xena! That'd be too cool.

Answer 4

The 4 further are in 2 diverse sorts. 'Ceres' advantages as that filled the hollow between Mars & Jupiter envisioned by technique of 'Bode-Titius' regulation yet grew to grow to be about to be a plethora of Asteroids. Being the most important Ceres advantages its prestige. the different 'Plutoids' (Pluto, Charon- its twin, Eris- your UB313) too are restored to planet-prestige. those are a lot smaller in evaluation to 'Mercury' sized Ganymede, Titan & Callisto (very heavily spaced in length at type of 5000 km diameter, merely about 50% more effective than Moon). yet as bench-mark records (and also for severe Planetary analyze that comprise atmospheres, magnetic fields and a possibility existence varieties) in uncomplicated words the different 8 serve the point.