New planets in solar system.

[Darthphere]

Somehow, this doesn't feel like a muscles post. I'm not sure why

Its actually funny.

 

[Speedball]

I always thought Earth was Krypton?

 

[Sentinel X]

Yeah I heard about this in class today..strange if you ask me, never heard of Charon but Ive heard of the other two, they were put in the "planetoid" category a while ago...Some people concidered them planets some people didnt, its strange

 

[Speedball]

Yeah I heard about this in class today..strange if you ask me, never heard of Charon but Ive heard of the other two, they were put in the "planetoid" category a while ago...Some people concidered them planets some people didnt, its strange

How could not hear of Charon?
It's been consider Pluto's "moon" for a LONG time.

 

[Leto Atrides]

I always thought Earth was Krypton?

Hwuh?

 

[Speedball]

Hwuh?

LOL!!!
Read Superman: Red Son.

 

[Sentinel X]

How could not hear of Charon?
It's been consider Pluto's "moon" for a LONG time.

Probably cause I admit that I dont know everything




Im now wondering what the new acronym will be rather than My Very Educated Mother Just Served Us Nine Pizzas....I loved that one

 

[Speedball]

LOL!!!
guess what Xena's moon is called?

Yep, today is a good day.

 

[Sentinel X]

So if they are counting all these planetoids as planets then there should by now be 16 at least

 

[Speedball]

I'm not quite sure what the others are.
I think Pluton and Caronte are spanish for Pluto and Charon.
The image is from a website that is in spanish.

 

[Speedball]

here's another pic I found comparing size.

2003 UB313 is Xena.

 

[Sentinel X]

I read the other planetoids somewhere, I used to know all 16.
But the article is right there is no formal definition for a planet, its a really arbitary term. I think what should make a planet is 2 things:
1. Gravitation, basically luck in natures system as they said.
2. Certain elements present in the planet, I think they should classify a planet as something truly special ala Planet Earth, Jupiter, Saturn, ect. rather than just round rocks

 

[Neto Magnus]

How come no one discovered a new planet between Mars and Saturn until now?

 

[Speedball]

How come no one discovered a new planet between Mars and Saturn until now?

We knew it was there, we just never considered it a planet till now.
It's really just a big asteroid, probably the core of the planet that was once there.

 

[Future Prez]

This could all be solved if the astronomers in charge would just create a definition of what a "planet" really is. Then we could just look at the properties of something, and just go through a checklist of requirements.

definition=no debate

 

[Galactus]

Earth's Moon Could Become a Planet
By Robert Roy Britt
Senior Science Writer
posted: 17 August 2006
06:32 pm ET


If astronomers approve a newly proposed planet definition next week, things could get really strange. Sure, asteroid Ceres will become a planet. Pluto's moon Charon will become a planet.

But we're talking really strange.

Eventually, if Earth and its Moon survive long enough, the Moon will have to be reclassified as a planet, said Gregory Laughlin, an extrasolar planet researcher at the University of California, Santa Cruz.

The new definition, proposed this week by the International Astronomical Union (IAU), basically says every round object orbiting the Sun is a planet, unless it orbits another planet. But there is a big caveat: If the center of gravity, called the barycenter, is outside the larger object, then the smaller object is a planet. That wording elevates Pluto's moon Charon to planethood, an idea some astronomers have criticized.

But here's the thing. Earth's Moon was born in a catastrophic collision more than 4 billion years ago. It started out very close to the planet but has been moving away ever since. It's currently drifting away about 1.5 inches (3.74 centimeters) every year.

For now, the system's barycenter is inside Earth. But that will change.

"If the Earth and Moon do survive, then the barycenter will eventually move outside the Earth as the Moon recedes," Laughlin told SPACE.com. "At that point the Moon would be promoted to planetary status." [What would we call it?]

None of this would occur for a few billion years. And Earth and the Moon would have to survive a host of remote catastrophe scenarios along with the predicted swelling of the Sun into a red giant, which Laughlin and others have previously said might engulf and vaporize our planet (unless we can figure out a way to move it).

Other astronomers have noted that it is possible there are three-object systems yet to be found in the outer solar system. If they are all round and have that certain barycenter thing happening, then they'd be called triple planets under the new definition.

It gets stranger.

Astronomers expect to find hundreds of Pluto-sized objects in the outer solar system. If one has a satellite that is round, and which has a certain eccentric orbit—meaning the two objects come very close together at one point and then diverge greatly—then the barycenter could dip inside the larger object during part of the orbit, Laughlin explained.

In such a case, the smaller object would be defined as a moon part of the time and a planet the rest.

A vote on the new definition is scheduled for Aug. 24 at the IAU meeting in Prague.

 

[Speedball]

No, then Moons of Jupiter and Saturn would have to be considered as well.
there are some as large as Earth, but you don't see them listed as planets yet.
Charon is to be considered a planet because Pluto and charon are like a Binary star system.
They share the same orbit around the Sun, but orbit each other as well.
The moon, however, rotates around the Earth, so it's not possible to even be in the running to be a planet.

 

[Sentinel X]

This could all be solved if the astronomers in charge would just create a definition of what a "planet" really is. Then we could just look at the properties of something, and just go through a checklist of requirements.

definition=no debate

Seriously, I think its quite ridiculous....We find 3 other planets but we dont have a formal definition... okey dokey.

 

[Corinthian™]

No, then Moons of Jupiter and Saturn would have to be considered as well.
there are some as large as Earth, but you don't see them listed as planets yet.
Charon is to be considered a planet because Pluto and charon are like a Binary star system.
They share the same orbit around the Sun, but orbit each other as well.
The moon, however, rotates around the Earth, so it's not possible to even be in the running to be a planet.

didn't you read the post above you?

Jupiter and Saturn's satelites are still that. Unless the gravity center of them shifts outside of the planet in which they transform into a multiple planet system...

I really like this

 

[Speedball]

didn't you read the post above you?

Jupiter and Saturn's satelites are still that. Unless the gravity center of them shifts outside of the planet in which they transform into a multiple planet system...

I really like this

You just said the same thing I said.
And what do you like?

 

[Sentinel X]

I wish our solar system had a binary star system, just imagine how the sunset and sunrise would look...actually, I take that back...the heat would suck

 

[Speedball]

Yeah, we would have to be the sixth or seventh planet to actually survive.

 

[Sentinel X]

Erm...not necessarily

 

[hippie_hunter]

Speedball, Xena is not going to be the final name for 2003 UB313, it is only a nickname. If 2003 UB13 gets promoted to a planet it will be named after a Roman god

 

[hippie_hunter]

This doesn't make sense. How is Charon a planet? It's Pluto's moon, and it says right in the new definition that it can't be a satellite of another planet.

With other moons, the center of gravity is within the planet it orbits.

With Pluto and Charon, the center of gravity is inbetween the space between Pluto and Charon.

Instead of Charon orbiting Pluto, like a normal satelite does with it's planet; Pluto orbits Charon and Charon orbits Pluto.

Also Charon is over half the size of Pluto. No satelite is over half the size of the planet they orbit.

Thus Pluto and Charon are a double planet system