New 'Planet' Discovered in Solar System 184
Greyfox writes: "This USA Today story tells us that astronomers have discovered a puny little "planet" between Neptune and Pluto. Significantly larger than your average asteroid, it falls just shy of qualifying as being planet sized." Plutino?
Aww hell. (Score:1)
Other possible names (Score:1)
Plutolein
Pluto-chan
Plutette
More?
So it would be called... (Score:1)
Kierthos
Here's a idea.. (Score:1)
Waitaminute.. Statue of Liberty... that was our planet! You MANIACS!!! YOU BLEW IT UP!! DAMN YOU ALL TO HELL!!
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Re:Other possible names (Score:1)
Look closer... (Score:1)
Hmmm.... I'm skeptical (Score:1)
Name the Planet Contest (Score:1)
aw wait, that excellent name is already taken. I guess I could live with the name "Planet Who-Cares".
"I can only show you Linux... you're the one who has to read the man pages."
If a planet circles in darkness, does it exist? (Score:3)
Are they planets? Or just statistical anomolies intended to distract us from sending extrasolar probes to avoid the inevitable destruction of this solar system? Because, if we don't get out of the solar system, human life is an historical footnote in the history of the universe, a leaf fluttering from a tree in a vast and empty forest, which falls and decomposes with noone ever seeing it.
hrmmm (Score:4)
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If Bill Gates had a nickel for every time Windows crashed...
Planet usage (Score:1)
Where was it hiding? (Score:1)
I know it... (Score:1)
planet x/EB173 (Score:1)
Does the gravity of EB173 account for the unseen mass on that end of the solar system?
i know, (Score:1)
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Re:Hmmm.... I'm skeptical (Score:1)
Re:Other possible names (Score:5)
Plutanium - naw, Intel already has that one.
Plu.net - naw, Micorsoft already has that one.
Plunix - naw, The Open Group already has that one.
Plutoe - naw, Dan Quayle already has that one.
I give.
IANAA (Score:1)
Since there's now anime news on slashdot... (Score:2)
Or not...
BBK
Re:I doubt it (Score:2)
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Re:So it would be called... (Score:1)
It IS out there past Uranus.
Re:I know it... (Score:1)
illegal aliens?
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It's not a planet. (Score:1)
That's no moon... (Score:2)
well... (Score:3)
it was bound to happen. time to sew another star into the flag...
wait a minute...
It's cute, but that's about all. (Score:1)
Don't get me wrong, I'm not saying that it isn't neet, but really, it dosn't have much to offer. Couldn't we be spending our space research resources in a better way, like say researching dark matter [berkeley.edu]?
just my $.02
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Re:I know it... (Score:1)
Re:That's no moon... (Score:1)
Re:Aww hell. (Score:1)
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Thats no planet... (Score:2)
Re:well... (Score:1)
This post has no purpose other than to undo my bad moderation; I meant to mod the above up to "Funny", but I must have hit "Overrated" instead. D'oh.
Isn't the moon a planet? (Score:4)
Judging by this definition, earth's moon should be considered a planet. It is easily massive enough, and it has greater gravitational attraction to the sun than it does to the earth.
A planet which shares the same orbit as the earth, sure, but still a planet.
Forgetting something? (Score:2)
For that matter, is Pluto even a planet? [slashdot.org]
Re:Isn't the moon a planet? (Score:5)
A moon is a natural object that orbits a planet, where the center of mass of the planet-moon system lies within the planet. the irony is that although 'the Moon' is the archetypical moon, it doesn't fit this definition, as both the Moon and Earth rotate around a point in space between the two and outside the Earth. In truth, the Moon-Earth system is a binary planetary system, as is Charon and Pluto. All other 'moons' in the solar system are true moons by this definition.
Kevin Fox
Re:If a planet circles in darkness, does it exist? (Score:1)
WHAT?? Are you saying there's a Galactic (or Universal??!!) conspiracy against mankind?
Damn, it was bad enough when I thought we were just up against the multinationals and political fanatics. At least they're all from Earth.
Re:Other possible names (Score:1)
Plutarchus
Pluto-gigio
Pluto-pluto-mo-muto-banana-fana-fo-futo-fi-fie-
Plano, TX
Re:Other possible names (Score:1)
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I don't understand... (Score:2)
Don't get me wrong. I mean, I think it's cool that there's a really big rock floating out there and someone spotted it. But if anyone out there understands this and can explain better, please do.
Re:Forgetting something? (Score:2)
The first link you post is about a proposed Planet X that lies 30,000 AU from the Sun (Pluto's at about 40 AU). That puts it well outside the Solar System.
The second link you post is about a free-floating "planet" that was discovered by gravitational microlensing. It is also well outside the Solar System.
The story talks about a body (a tad too small to be considered a planet) that's orbiting between Neptune and Pluto. That puts it within the Solar System.
Before you go shooting your mouth off about old news, try reading articles.
Good one! That would make it planet. . . (Score:1)
Dingleberry
Re:Hmmm.... I'm skeptical (Score:1)
They dont say, but I'm guessing it was just passing through and graviy did it's thing... blah blah blah...
but I really dont know...
No, it orbits the Earth (Score:3)
the Earth-at-the-center--of-the-universe issue (Score:3)
This theory has been known as one possibility among several ever since; it was not "discovered" by later astronomers as most textbooks would have us believe. Sure, mathematics and, later, telescopes helped to prove it correct, but the idea was current long before.
Re:No, it orbits the Earth (Score:1)
the irony is that although 'the Moon' is the archetypical moon, it doesn't fit this definition, as both the Moon and Earth rotate around a point in space between the two and outside the Earth.
So who is right?
Re:Since there's now anime news on slashdot... (Score:1)
In the name of planet linux I shall punish you!
Linux thunderbolt slashdot effect!
Images of EB173: (Score:5)
And while I'm at it, here's [www.klet.cz] a considerably grainier shot taken at the Klet observatory.
Text of Rabinowitz's paper: (Score:4)
Re:I know it... (Score:1)
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name (Score:1)
Re:So it would be called... (Score:1)
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01 13 19
TVDJC TDSLR AZNGT NWQSH KPN
Re:Isn't the moon a planet? (Score:2)
Aaar, Thar Be Planets For Tha Takin Here ... (Score:1)
Let me get this straight - we should sew on another star and proclaim Planet X.11 as a State of the United States of America and Peurto Rico still isn't even a state yet?
I don't think so
Hey, concept, let's GPL it! Or maybe we can patent it and grant the patent to Linus for a birthday present?
Douglas Adams came up with a great name! (Score:1)
Re:Forgetting something? (Score:1)
I may be missing something painfully obvious here (and not for the first time either), but if this Planet X orbits the sun as the BBC article behind the first link says, wouldn't that make it make it part of the Solar System?
Re:the Earth-at-the-center--of-the-universe issue (Score:1)
Mount A Slingshot on the moons of Neptune... (Score:1)
Realistically, though, we ought to think about this as another usefull small planet.
There aren't any good, seperate planetoids in the outer areas. So many gas giants, moon, all of that gravitational hassle.
Takeuchi-sama's next doujinshi (Score:1)
*nifty psychadelic demi-nudity*
"Linux Planet Power!"
*ribbons*
*less ribbons*
*ooooohhhhh*
"Appearing minutely, I am Sailor Linux!"
"In the name of the God Torvalds I shall..."
-- a. Punish You!
-- b. Chastise You!
-- c. Flash You!
-- d. Integrate You into a Multi-User Developers' Enviroment!
-- e. Shut the #*(@ up and return to non-anime posts because the viewer is bitterly biased about things that don't blink and make buzzing sounds.
Choose.... wisely.
Rupert (Score:1)
Ceres is larger (Score:3)
Ceres = 584 mi
EB173 (Plutino) = 373 mi
Pallas = 365 mi
Vesta = 358 mi
One small correction (Score:2)
Pluton - Charon - which of them are to be considered to be the planet and the ????
Earth - Moon. Yes it is the Moon that mostly looses in this game. However this stuff is too heavy that it is hard to consider Earth moving "independently" around the Sun. So people we are living in a planetesimal...
Moons from the Jovian planets. One of them seems to be even bigger than Mercury if I'm not mistaken.
And to end. Recently there was some discussion sbout a "wandering planet". Well an object bigger than Jupiter but short of being a star. Wandering away from any star at high speeds. So, according to this article that is not a planet. So what it is? Flash Gordon's Mongo?
Not quite... (Score:4)
Bottom line, your thesis is based on a faulty assertion. (i.e. Earth and Luna don't revolve around a common point in space - that point is comfortably beneath the earth's surface.)
See this link [raytheon.com] for greater detail.
-Isaac
BEN (Score:2)
Re:BEN (Score:2)
Re: space station (Score:2)
Re: space station (Score:2)
Re: space station (Score:2)
LUKE: Why are we still moving towards it?
Re: space station (Score:2)
Re: space station (Score:2)
Re: space station (Score:2)
Re: fighting (Score:2)
BEN: You can't win. But there are alternatives to fighting.
Plutino? (Score:2)
Pluto? No, don't go there, that's a Mickey Mouse planet!
-- Mork
Re:That's no moon... (Correction) (Score:2)
BEN: That's no moon! It's a space station.
HAN: It's too big to be a space station.
LUKE: I have a very bad feeling about this.
BEN: Yeah, I think your right. Full reverse! Chewie, lock in the auxiliary power.
The pirateship shudders and the TIE fighter accelerates away toward the gargantuan battle station.
LUKE: Why are we still moving towards it?
HAN: We're caught in a tractor beam! It's pulling us in!
LUKE: But there's gotta be something you can do!
HAN: There's nothin' I can do about it, kid. I'm in full power. I'm going to have to shut down. But they're not going to get me without a fight!
Ben Kenobi puts a hand on his shoulder.
BEN: You can't win. But there are alternatives to fighting.
Re:Images of EB173: (Score:2)
Not being much of an astronomer myself I can't help but look at them and say:
"Oh, well there it is! How could they miss that hazy dot, surrounded by other more or less hazy dots."
Re:Not quite... (Score:2)
I know I heard it somewhere though. Must've been someone with a broken calculator or someone else with blind faith in what they see and hear.
You may now mod me down.
Kevin Fox
This is not a planet or asteroid (Score:2)
This object belongs the the Knuiper Belt [hawaii.edu] a class of objects similiar to asteroids. Pluto is thought to be the largest example of a Knuiper object>.
Planet is questionable (Score:2)
It seems as if many people want there to be a planet X, but in reality chances are quite slim that anything of a substatial (I.E.: planet) size existing beyond Neptune.
Re:the Earth-at-the-center--of-the-universe issue (Score:2)
Copernicus just suggested a detailed model for it, and so got the Extended Copernicus Principle named after him, which takes the idea further, saying that all points in the universe are equally unimportant.
There's a short article here [ex.ac.uk] which extends the argument further... to a dim end to everything :-(
Re:Wait a second.... (Score:2)
A Little Light Astronomy (Score:5)
Okay, first, this object will probably not be called "Plutino", because that name's already pretty much taken and has been used for a class of objects which astronomers decide are larger than the average asteroid, but smaller than the traditional definition of a planet. They've been discovering plutinos for years now and there's even a circular which goes out in the astronomical community a couple times a year which outlines the information on all the plutinos.
These plutinos, and even Pluto itself, is believed to have come from, or may still be part of a large group of chunks of rock called the Kuiper Belt. This belt rings our solar system just beyond the orbit of Pluto. The important factor influencing these object is the planet Neptune which, because of its orbit, will occasionally pull an object from the Kuiper belt and drag it into the solar system proper. Also, bodies in the Kuiper Belt run into each other, and the collision will send a body into our solar system. This is where astronomers believe Pluto and this new rock may have come from. Astronomers believe that there are even more bodies orbiting more closely than the Kuiper Belt, probably tucked in between the orbits of Neptune and Pluto, and just beyond Pluto.
Beyond the Kuiper Belt is yet another conglomeration of chunks of rock and dust called the Oort Cloud. This also surrounds our solar system and may actually protect us from some of the things that could zip into the system and strike another planet or disrupt things. The Oort Cloud also provides us with debris which will come floating into the solar system from collisions with object in the cloud, or from objects that arrive in the cloud from outside. We don't quite know how large the cloud is, for sure, nor how many objects are in ot, mostly because the cloud doesn't reflect what little light it might get. We make our guesses based on fairly obscure measuring methods. It has been suggested that perhaps the Oort Cloud has a good amount of Dark Matter in it, but that's pretty much conjecture right now.
The upshot of the whole thing is that, the harder we look, the more we find in our own backyard. Our methods of studyign the heavens have gotten more and more sophisticated, and allow us to see smaller objects, orbiting farther away. I, personally, hope that we realize that, as long as we're looking out there anyhow, it wouldn't be a bad idea to look systematically, especially for objects that could pose some sort of threat to our planet directly. The tech is cheap, and what we'd need to build to deal with any intruder that might run into us is also quite cheap. Maybe it's not a bad idea at all.
-Jimmie
Re:Isn't the moon a planet? (Score:2)
Humans are so busy classifying things that we often neglect to realize why things like this 'planetoid' are really important - perhaps it will shed some new light on our solar systems evolution or whatever, but I hardly think debating whether or not it is a planet is at all important, after all, what makes a planet any different from a big rock?
It's Mondas! (Score:2)
Planet Order Mnemonic (Score:4)
 My Very Easy Mnemonic Just Sucks - Useless Now, Extra Planet.
The debate (Score:3)
Phillip Narf a spokesman for the P.C.R.F. said: "The traditionalists are pooh heads. Pluto is the smallest planet, and as such it needs to be called an asteroid". "Nonsense" replied Arnold Dweeb of the traditionalist school "if we call Pluto an asteroid it would be by far the largest asteroid ever discovered, and as such would automatically be promoted to planetary status."
In a related story computer nerds around the world were seen dancing in the streets. A post on Slashdot - the computer nerd news web site explained the jubilation: "Finally we have found a group even more pathetic than we are; at least we could go out at night if we wanted to. And everybody used to say that we needed to get lives."
Re:Other possible names (Score:2)
Bluto
Nanuto
Planet Nike®
Gnutella
Bob
Doug
Nivlem (Tax Haven for the Rich 'I pay taxes on Nivlem!')
Skippy, the intergalactic planet of evil twins
And of course...
Foobar
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Re:Isn't the moon a planet? (Score:2)
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Re:Anybody remember Chiron? (Score:2)
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Re:planet x/EB173 (Score:2)
The search for Planet X began in earnest around the turn of the 20th century. Percival Lowell (justly famed but also justly taken with a grain of salt) claimed to have found it at least once. But it wasn't until Clyde Tombaugh engaged in the tedious exercise of studying thousands of glass photographic plates (using a special machine like a ViewFinder) that he found a blip that moved from one to the other. This was Pluto.
Pluto, alas, was far too small to have caused the perturbations ascribed to Planet X, so the controversy continued for a number of years. Only in the 1980s was it finally proven that the perturbations in Neptune's orbit were due to imprecise measurements from Earth-based observatories. Voyager 2 was instrumental in demonstrating this point by determining Neptune's mass during its flyby to a much higher degree than was formerly possible.
Now that Neptune is known to be, as it were, unperturbed, all but a few diehards agree there is no Planet X.
Read the Search for Planet X [arizona.edu] for detailed information.
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Re:Hmmm.... I'm skeptical (Score:2)
Of course you're joking, but the search for Trans-Neptunian objects has barely begun, with about half the objects discovered being found just this year. Partly due to "SpaceGuard" type concerns (hitting Earth), and partly due to better Earth-based telescopes, we can now undertake this systematic search. Once people began looking with the latest instruments, the planetoids started turning up by the bucketful.
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Re:planet x/EB173 (Score:2)
They were claiming Planet X as the only known source of Eludium Phosdex, the shaving cream atom.
The eager young space cadet found out how to get there by following the lettered planets!
Re:Good one! That would make it planet. . . (Score:2)
Asteroid Name List Link! *Fun* *Cool* *Foo* (Score:2)
Unless the next party includes any of the following: Actors, actresses, models, recording artists, professional athletes, amature athletes, sports agents, literary agents, lawyers, lawyers with doberman pinschers clamped onto one or both ankles, used car salesman, RIAA scum, MPAA filth, pencil pushers, paper shufflers or accountants.
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Re:If a planet circles in darkness, does it exist? (Score:2)
In the long run, the book gets swallowed by a black hole, and evaporated as hawking radiation until there's nothing left.
Re:Isn't the moon a planet? (Score:2)
No just kidding, but it IS an oblate spheroid!
Difference between "asteroid" and "planet" (Score:2)
You've wandered into my jurisdiction.
Pre-telescope, a planet (for the Greek word for "wanderer") was any sky object that moved against the "fixed" background of stars. These obviously didn't include Uranus, Neptune, or Pluto, which can't be seen with the naked eye, but did include the Sun and Moon. (The makes the mystical number 7, which happens to be why we have 7 days in the week, a survival from Middle Eastern religious astrology.)
This terminology was not very useful after telescopes revealed a bunch of lot of objects not visible with the naked eye. So "planet" was redefined as an object that moved and resolved to a disk in a telescope -- except for satellites of planets, which became "moons" with a little M.
But telescopes turned up a lot of objects that moved agains the starry background (like planets) but didn't resolve to a disk (like stars). These earned the adjectives "planetoid" (planet-like) and "asteroid" (star-like). "Asteroid" seems to have become the standard noun, leaving "Planetoid" for Star Trek writers to play with.
Elsewhere in this discussion somebody argues against getting caught up in artificial distinctions. Despite my professional obssesion with words and taxonomies (or maybe because of it), I have to endorse this POV. You can argue about whether Pluto is a planet or a moon (a issue that would be clearer if it either Pluto or Charon were either closer or father from their comon center of rotation) or whether Jupiter is a hot planet or a cool star (just a few million degrees either way...) But words are just for communicating between people. The universe laughs at our petty distinctions.
__________
Re:Isn't the moon a planet? (Score:2)
Re:Isn't the moon a planet? (Score:2)
Re:planet x/EB173 (Score:2)
(No humans on Planet X, hence, no humans used in testing - only engineers).
Re:Difference between "asteroid" and "planet" (Score:2)
Kevin Fox
Re:hrmmm (Score:2)
J
Oh no, not another one (Score:2)
Trans-Neptunian Object EB173 Planet Power, MAKE UP!