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Alan Boss, a planet-formation theorist at the Carnegie Institute in Washington, DC, agrees that a passing star or dense cloud of gas is the more likely cause for Sednas strange travels. Boss said it would be "hard to imagine" forming an Earth-sized object out where the interaction would have taken place.
Region to explore
But Brown said there is one unexplored region of space left, amounting to about 20 percent of the sky, that hasnt been searched for an Earth-sized object that would be orbiting at 70 AU and presumably in the main plane of the solar system. It is the region toward the bright galactic center, which is harder to search.
Browns team said they thought Sedna should be counted as the first known object of the otherwise theoretical Oort Cloud. The distant reservoir of small icy objects is thought to exist based on the orbits of some comets that zoom through the inner solar system now and then, and then disappear into deep space.
Nobody knows what's actually in the Oort Cloud, however.
"I would say that is likely" Stern said in regards to possible Earth-sized planets in the Oort Cloud. In the early years of the solar system, he explained, objects as massive as Earth are thought to have hit Uranus and Neptune. Computer simulations show most of the hypothetical Earth-mass objects "would be ejected from the outer planets region, not accumulated in Uranus and Neptune, so we could someday find these frozen relics in the Oort Cloud."
....
Originally posted by ElectricUniverse
Ohh, so i am stupid because I am calling you AGAIN on your misquote that another member made and you claim it was mine?....
Stop trying to derail the thread, and admit you were wrong. I never said that diagram came from encyclopedia Britannica...
BTW, the 1987 new Science and Invention encyclopedia" does exist even if it is rare.
This is not the first time you tried to attribute what another member said to me, and that's where you are lying.
If you are going to quote someone, make sure you do it right.
Fourthly This diagram came from the New Science and Invention Encyclopedia, published in 1987, not Encyclopedia Britannica 1983.
Really? You claimed among many things that we know for certain the pioneer anomalies were because of the Sun, as in a sunward direction, and I showed that they THINK it is a sunward direction but they are not sure about the origin...
For crying out loud.. I already showed you and even increased the size of the quotes from one of the experts...
Some astronomers even say it is possible that an Earth size planet, and even bigger could be within 70 AU. You obviously haven't been keeping up with this topic.
16 March 2004
You denied the existance of any such large planet existing anywhere close to 320AU...or the existance of a brown dwarf anywhere close to 25,000AU... Yet there are MANY THEORIES of where such Solar System objects could be.
A Mars-sized body can be found at not less than 70–85 au: such bounds are 147–175 au, 1006–1200 au, 4334–5170 au, 8113–9524 au and 10 222–12 000 au for a body with a mass equal to that of the Earth, Jupiter, a brown dwarf, red dwarf and the Sun, respectively.
Pluto became labelled a planet (because Tombaugh was searching for a planet he assumed that was what he had found) whereas we now appreciate it more clearly as the largest known Kuiper Belt Object.
Originally posted by masterp
If so, then the Oort cloud is closer to Alpha Centauri than us. The AC is about 4 light years away.
Browns team said they thought Sedna should be counted as the first known object of the otherwise theoretical Oort Cloud. The distant reservoir of small icy objects is thought to exist based on the orbits of some comets that zoom through the inner solar system now and then, and then disappear into deep space.
Nobody knows what's actually in the Oort Cloud, however.
"I would say that is likely" Stern said in regards to possible Earth-sized planets in the Oort Cloud. In the early years of the solar system, he explained, objects as massive as Earth are thought to have hit Uranus and Neptune. Computer simulations show most of the hypothetical Earth-mass objects "would be ejected from the outer planets region, not accumulated in Uranus and Neptune, so we could someday find these frozen relics in the Oort Cloud."
....
Originally posted by stereologist
Please learn to read and comprehend. I did not say that the cause was the sun. That is your failed understanding of what I posted.
Originally posted by stereologist
That is a lie because your quote came from a source other than the papers. Please stop this baloney. It is making you look bad.
Originally posted by stereologist
Actually that has been shown multiple times to be false.
16 March 2004
Obviously, relying on outdated material is a bad idea.
A Mars-sized body can be found at not less than 70-85 au: such bounds are 147-175 au, 1006-1200 au, 4334-5170 au, 8113-9524 au and 10 222-12 000 au for a body with a mass equal to that of the Earth, Jupiter, a brown dwarf, red dwarf and the Sun, respectively.
Originally posted by stereologist
There are well known constraints. Misrepresenting articles, misrepresenting posts, and using outdated information is quite unbecoming.
for a body with a mass equal to
a Mars-sized body = 70-85 au:
an Earth-sized planet = 147-175 au,
a Jupiter-sized planet = 1006-1200 au,
a brown dwarf = 4334-5170 au,
a red dwarf = 8113-9524 au
a Sun = 10 222-12 000 au respectively.
A Mars-sized body can be found at not less than 70-85 au: such bounds are 147-175 au, 1006-1200 au, 4334-5170 au, 8113-9524 au and 10 222-12 000 au for a body with a mass equal to that of the Earth, Jupiter, a brown dwarf, red dwarf and the Sun, respectively.
Let me provide a simple example.
If condition A says d > 70
and if condition B says d > 300
then condition B sets a stronger constraint than condition A.
Iorio's computations show that a planet sized object is no where close to the sun. In fact, it is at best on the outer fringes of the Kuiper belt.
Whole sky surveys have shown even stronger restrictions since they have been done down to magnitude 24.
So there is no proof that no large Mars/Earth size planet can be anywhere close to 320 AU? and a bronw dwarf or red dwarf would have to be at 25,000AU?...
So let's recap what research says that models predict other planet the size of Mars, an Earth-sized object, a Jupiter-sized body, a brown dwarf, a red dwarf, and even an object the mass of the Sun could be within the Solar System.
for a body with a mass equal to
a Mars-sized body = 70-85 au:
an Earth-sized planet = 147-175 au,
a Jupiter-sized planet = 1006-1200 au,
a brown dwarf = 4334-5170 au,
a red dwarf = 8113-9524 au
a Sun = 10 222-12 000 au respectively.
BTW... I also posted excerpts from EXPERTS which say it is possible that a Mars-sized or Earth-sized planet, and some say even larger, could be at around 70AU....yet "stereologist" wants to claim the contrary...
BTW, the constrains mean that such objects CAN'T BE CLOSER than the distances given, but CAN BE within the distances shown....
Detectability of distant planets.
Planet V(1,1,0)1 R24(AU)2 Rgrav(AU)3
Earth −3.9 620 50
Jupiter −9.3 2140 340
Neptune −6.9 1230 130
Pluto −1.0 320 N/A
1 Absolute magnitude of the planet, equal to the V magnitude at unit heliocentric and geocentric distance and zero phase angle.
2 The distance at which the planet would have apparent magnitude mV = 24.
3 The distance at which the gravitational perturbation by the planet would just be detectable, as computed using Equation (4), Pluto is undetectable by this method at any distance for which Equation (4) is valid: See Hogg et al.
(1991).
A Mars-sized body ]can be found at not less than 70-85 au: such bounds are 147-175 au, 1006-1200 au, 4334-5170 au, 8113-9524 au and 10 222-12 000 au for a body with a mass equal to that of the Earth, Jupiter, a brown dwarf, red dwarf and the Sun, respectively.
Originally posted by stereologist
reply to post by ElectricUniverse
Reading and comprehension and math are all requirements.
Originally posted by stereologist
This seems to be too difficult for you to learn, but I think you can figure this out.
Browns team said they thought Sedna should be counted as the first known object of the otherwise theoretical Oort Cloud. The distant reservoir of small icy objects is thought to exist based on the orbits of some comets that zoom through the inner solar system now and then, and then disappear into deep space.
Nobody knows what's actually in the Oort Cloud, however.
"I would say that is likely" Stern said in regards to possible Earth-sized planets in the Oort Cloud. In the early years of the solar system, he explained, objects as massive as Earth are thought to have hit Uranus and Neptune. Computer simulations show most of the hypothetical Earth-mass objects "would be ejected from the outer planets region, not accumulated in Uranus and Neptune, so we could someday find these frozen relics in the Oort Cloud."
....
Alan Boss, a planet-formation theorist at the Carnegie Institute in Washington, DC, agrees that a passing star or dense cloud of gas is the more likely cause for Sednas strange travels. Boss said it would be "hard to imagine" forming an Earth-sized object out where the interaction would have taken place.
Region to explore
But Brown said there is one unexplored region of space left, amounting to about 20 percent of the sky, that hasnt been searched for an Earth-sized object that would be orbiting at 70 AU and presumably in the main plane of the solar system. It is the region toward the bright galactic center, which is harder to search.
Yeah...the fact that there are many different THEORIES and many of them put such object/s much closer than you claim is something you obviously don't understand...
Lorenzo Iorio from the National Institute of Nuclear Physics in Pisa (Italy) has taken orbital data from many years of precise observations and used his computations to predict the closest possible distance at which a massive planet could orbit if it was out there.
It turns out that all the planets the mass of Mars and above have been discovered within the Solar System. Iorio computes that the minimum possible distances at which a Mars-mass, Earth-mass, Jupiter-mass and Sun-mass object can orbit around the Sun are 62 AU, 430 AU, 886 AU and 8995 AU respectively. To put this into perspective, Pluto orbits the Sun at an average distance of 39 AU.
So if we used our imaginations a bit, we could say that a sufficiently sized Planet X could be patrolling a snail-paced orbit somewhere beyond Pluto. But there's an additional problem for Planet X conspiracy theorists. If there was any object of sufficient size (and by "sufficient" I mean Pluto-mass, I'm being generous), according to a 2004 publication by David Jewitt, from the Institute for Astronomy, University of Hawaii, we would have observed such an object by now if it orbited within 320 AU from the Sun.
Originally posted by stereologist
........
While you are reviewing your articles I see that you still have not found in any of the peer reviewed articles on anomalies that you posted any place where the experts suggest the existence of a point gravitational source. Please cite the article, the page, and if you want the text suggesting that is the case.
Persistent Evidence of a Jovian Mass Solar Companion in the Oort Cloud
Authors: John J. Matese, Daniel P. Whitmire
(Submitted on 26 Apr 2010)
Abstract: We present an updated dynamical and statistical analysis of outer Oort cloud cometary evidence suggesting the sun has a wide-binary Jovian mass companion. The results support a conjecture that there exists a companion of mass ~ 1-4 M_Jup orbiting in the innermost region of the outer Oort cloud. Our most restrictive prediction is that the orientation angles of the orbit normal in galactic coordinates are centered on the galactic longitude of the ascending node Omega = 319 degree and the galactic inclination i = 103 degree (or the opposite direction) with an uncertainty in the normal direction subtending ~ 2% of the sky. A Bayesian statistical analysis suggests that the probability of the companion hypothesis is comparable to or greater than the probability of the null hypothesis of a statistical fluke. Such a companion could also have produced the detached Kuiper Belt object Sedna. The putative companion could be easily detected by the recently launched Wide-field Infrared Survey Explorer (WISE).
Comments: 41 pages, 9 figures, submitted to ICARUS
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:1004.4584v1 [astro-ph.EP]
Submission history
From: Daniel Whitmire Ph.D. [view email]
[v1] Mon, 26 Apr 2010 18:00:59 GMT (570kb)
Discovery of a Candidate Inner Oort Cloud Planetoid
Michael E. Brown
Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125; [email protected]
Chadwick Trujillo
Gemini Observatory, 670 North A`ohoku Place, Hilo, HI 96720; [email protected]
and
David Rabinowitz
Department of Physics, Yale University, P.O. Box 208121, New Haven, CT 06520; [email protected]
Received 2004 March 16; accepted 2004 April 21
ABSTRACT
We report the discovery of the minor planet (90377) Sedna, the most distant object ever seen in the solar system. Prediscovery images from 2001, 2002, and 2003 have allowed us to refine the orbit sufficiently to conclude that Sedna is on a highly eccentric orbit that permanently resides well beyond the Kuiper Belt with a semimajor axis of 480 ± 40 AU and a perihelion of 76 ± 4 AU. Such an orbit is unexpected in our current understanding of the solar system but could be the result of scattering by a yet-to-be-discovered planet, perturbation by an anomalously close stellar encounter, or formation of the solar system within a cluster of stars. In all of these cases a significant additional population is likely present, and in the two most likely cases Sedna is best considered a member of the inner Oort Cloud, which then extends to much smaller semimajor axes than previously expected. Continued discovery and orbital characterization of objects in this inner Oort Cloud will verify the genesis of this unexpected population.
1. INTRODUCTION
The planetary region of the solar system, defined as the region that includes nearly circular low-inclination orbits, appears to end at a distance of about 50 AU from the Sun at the edge of the classical Kuiper Belt (Allen et al. 2002; Trujillo & Brown 2001). Many high-eccentricity bodies from the planetary region comets and scattered Kuiper Belt objects cross this boundary, but all have perihelia well within the planetary region. Far beyond this edge lies the realm of comets, which are hypothesized to be stored at distances of 104 AU in the Oort Cloud. While many objects presumably reside in this Oort Cloud indefinitely, perturbation by passing stars or Galactic tides occasionally modifies the orbit of a small number of these Oort Cloud objects, causing them to reenter the inner solar system, where they are detected as dynamically new comets (Oort 1950; Duncan et al. 1987), allowing a dynamical glimpse into the distant region from which they came. Every known and expected object in the solar system has either a perihelion in the planetary region, an aphelion in the Oort Cloud region, or both.
While you are reviewing your articles I see that you still have not found in any of the peer reviewed articles on anomalies that you posted any place where the experts suggest the existence of a point gravitational source. Please cite the article, the page, and if you want the text suggesting that is the case.
The OP was about one such paper you claim don't exist...