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Author Topic: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM  (Read 5599 times)

Yowbarb

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Posting here headlines from two main articles, of the main scientific discovery announced yesterday! First the Guardian UK followed by Carnegie Institute article in next post.
Pls note asteroid with rings which shouldn't have rings, announced by Brazilians astronomers is actually a big discovery too. It very likely all ties together. Next post will post that article from Carnegie about the dwarf planet discovery (and theory of a super earth.)

The main event:

http://www.theguardian.com/science/2014/mar/26/dwarf-planet-super-earth-solar-system-2012-vp113?CMP=fb_gu

Dwarf planet discovery hints at a hidden Super Earth in solar system

Orbits sun at greater distance than any other known object
• 2012 VP113 may be shepherded by unseen planet
• Discovery team call it VP, or 'Biden' after US vice president
« Last Edit: March 27, 2014, 09:13:51 AM by Yowbarb »

Yowbarb

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #1 on: March 27, 2014, 08:42:27 AM »
Pls don’t miss this closing statement from the Guardian article: ending paragraph is below.

"Earlier this month, Nasa's Wide-Field Infrared Survey Explorer (Wise) reported the results from its search for "Planet X", a hypothesised planet far out in the solar system. It found no evidence for a new planet larger than Saturn within 10,000 AU of the sun. But Saturn is 95 times more massive than Earth, so a smaller Super Earth could go undetected in that region."

http://www.theguardian.com/science/2014/mar/26/dwarf-planet-super-earth-solar-system-2012-vp113?CMP=fb_gu

Yowbarb

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #2 on: March 27, 2014, 09:09:24 AM »
•   Solar System's Edge Redefined Wednesday, March 26, 2014

•   http://carnegiescience.edu/news/solar_systems_edge_redefined
•   “Sheppard and Trujillo suggest a Super Earth or an even larger object at hundreds of AU could create the shepherding effect
•   seen in the orbits of these objects, which are too distant to be perturbed significantly by any of the known planets.

enlightenme

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #3 on: March 27, 2014, 03:19:48 PM »
Excellent info and research Barb!!  Thanks so much for all you do!  :)

ilinda

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #4 on: March 27, 2014, 05:25:25 PM »
[/b]
The main event:

http://www.theguardian.com/science/2014/mar/26/dwarf-planet-super-earth-solar-system-2012-vp113?CMP=fb_gu

I clicked on "The main event" and saw the pictures.  OK, it looks very intriguing, but one thing that bothers me and maybe I'm missing some important piece of information, but when I looked at the one photo that showed the sky scene, with the planet at three different locations (its locations at about 2-hour intervals), I felt that at such a distance that that planet is from us, would it really show that much movement within a two-hour period?  That seems like a lot of movement through space, considering how far away the photographic equipment is.  Isn't it photographed from a satellite that is orbiting Earth?

Yowbarb

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #5 on: March 28, 2014, 07:23:36 AM »
Excellent info and research Barb!!  Thanks so much for all you do!  :)

I do what I can...wish it could be more... We are part of the team.
 :)

Yowbarb

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #6 on: March 28, 2014, 07:52:06 AM »
http://carnegiescience.edu/news/solar_systems_edge_redefined

http://carnegiescience.edu/about/whoweare Our Research / Who We Are

Carnegie investigators are leaders in the fields of plant biology, developmental biology, Earth and planetary sciences, astronomy, and global ecology. The institution has six research departments: the Geophysical Laboratory and the Department of Terrestrial Magnetism, both located in Washington, D.C.; The Observatories, in Pasadena, California, and Chile; the Department of Plant Biology and the Department of Global Ecology, in Stanford, California; and the Department of Embryology, in Baltimore, Maryland.
.................................

Solar System's Edge Redefined

Wednesday, March 26, 2014

Washington, D.C.—The Solar System has a new most-distant member, bringing its outer frontier into focus.

New work from Carnegie's Scott Sheppard and Chadwick Trujillo of the Gemini Observatory reports the discovery of a distant dwarf planet, called 2012 VP113, which was found beyond the known edge of the Solar System. This is likely one of thousands of distant objects that are thought to form the so-called inner Oort cloud. What's more, their work indicates the potential presence of an enormous planet, perhaps up to 10 times the size of Earth, not yet seen, but possibly influencing the orbit of 2012 VP113, as well as other inner Oort cloud objects.

Their findings are published March 27 in Nature.

The known Solar System can be divided into three parts: the rocky planets like Earth, which are close to the Sun; the gas giant planets, which are further out; and the frozen objects of the Kuiper belt, which lie just beyond Neptune's orbit. Beyond this, there appears to be an edge to the Solar System where only one object, Sedna, was previously known to exist for its entire orbit. But the newly found 2012 VP113 has an orbit that stays even beyond Sedna, making it the furthest known in the Solar System.

"This is an extraordinary result that redefines our understanding of our Solar System," says Linda Elkins-Tanton, director of Carnegie's Department of Terrestrial Magnetism.

Sedna was discovered beyond the Kuiper Belt edge in 2003, and it was not known if Sedna was unique, as Pluto once was thought to be before the Kuiper Belt was discovered. With the discovery of 2012 VP113 it is now clear Sedna is not unique and is likely the second known member of the hypothesized inner Oort cloud, the likely origin of some comets.

2012 VP113’s closest orbit point to the Sun brings it to about 80 times the distance of the Earth from the Sun, a measurement referred to as an astronomical unit or AU. For context, the rocky planets and asteroids exist at distances ranging between .39 and 4.2 AU. Gas giants are found between 5 and 30 AU, and the Kuiper belt (composed of thousands of icy objects, including Pluto) ranges from 30 to 50 AU. In our solar system there is a distinct edge at 50 AU. Only Sedna was known to stay significantly beyond this outer boundary at 76 AU for its entire orbit.

“The search for these distant inner Oort cloud objects beyond Sedna and 2012 VP113 should continue, as they could tell us a lot about how our Solar System formed and evolved," says Sheppard.

Sheppard and Trujillo used the new Dark Energy Camera (DECam) on the NOAO 4 meter telescope in Chile for discovery. DECam has the largest field-of-view of any 4-meter or larger telescope, giving it unprecedented ability to search large areas of sky for faint objects. The Magellan 6.5-meter telescope at Carnegie’s Las Campanas Observatory was used to determine the orbit of 2012 VP113 and obtain detailed information about its surface properties.

From the amount of sky searched, Sheppard and Trujillo determine that about 900 objects with orbits like Sedna and 2012 VP113 and sizes larger than 1000 km may exist and that the total population of the inner Oort cloud is likely bigger than that of the Kuiper Belt and main asteroid belt.

“Some of these inner Oort cloud objects could rival the size of Mars or even Earth. This is because many of the inner Oort cloud objects are so distant that even very large ones would be too faint to detect with current technology”, says Sheppard.

Both Sedna and 2012 VP113 were found near their closest approach to the Sun, but they both have orbits that go out to hundreds of AU, at which point they would be too faint to discover. In fact, the similarity in the orbits found for Sedna, 2012 VP113 and a few other objects near the edge of the Kuiper Belt suggests that an unknown massive perturbing body may be shepherding these objects into these similar orbital configurations. Sheppard and Trujillo suggest a Super Earth or an even larger object at hundreds of AU could create the shepherding effect seen in the orbits of these objects, which are too distant to be perturbed significantly by any of the known planets.

There are three competing theories for how the inner Oort cloud might have formed. As more objects are found, it will be easier to narrow down which of these theories is most likely accurate. One theory is that a rogue planet could have been tossed out of the giant planet region and could have perturbed objects out of the Kuiper Belt to the inner Oort cloud on its way out. This planet could have been ejected or still be in the distant solar system today. The second theory is that a close stellar encounter could have put objects into the inner Oort cloud region. A third theory suggests inner Oort cloud objects are captured extra-solar planets from other stars that were near our Sun in its birth cluster.

The outer Oort cloud is distinguished from the inner Oort cloud because in the outer Oort cloud, starting around 1500 AU, the gravity from other nearby stars perturbs the orbits of the objects, causing objects in the outer Oort cloud to have orbits that change drastically over time. Many of the comets we see were objects that were perturbed out of the outer Oort cloud. Inner Oort cloud objects are not highly affected by the gravity of other stars and thus have more stable and more primordial orbits.

Caption: This is an orbit diagram for the outer solar system. The Sun and Terrestrial planets are at the center. The orbits of the four giant planets, Jupiter, Saturn, Uranus and Neptune, are shown by purple solid circles. The Kuiper Belt, including Pluto, is shown by the dotted light blue region just beyond the giant planets. Sedna's orbit is shown in orange while 2012 VP113's orbit is shown in red.
A larger version is available here:   https://carnegiescience.edu/vp113_orbit

Another image is available here:     https://carnegiescience.edu/2012_vp113
 __________________

Acquisition of data used in this study was supported by NASA. Observations were partly obtained at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, operated by the Association of Universities for Research in Astronomy, under contract with the National Science Foundation. This paper also includes data gathered with the 6.5-meter Magellan Telescopes located at Las Campanas Observatory, Chile.

ilinda

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #7 on: March 28, 2014, 05:22:59 PM »
Posting here headlines from two main articles, of the main scientific discovery announced yesterday! First the Guardian UK followed by Carnegie Institute article in next post.
Pls note asteroid with rings which shouldn't have rings, announced by Brazilians astronomers is actually a big discovery too. It very likely all ties together. Next post will post that article from Carnegie about the dwarf planet discovery (and theory of a super earth.)

The main event:

http://www.theguardian.com/science/2014/mar/26/dwarf-planet-super-earth-solar-system-2012-vp113?CMP=fb_gu


This is a correction of my post of 3-27-14 (quoting Yowbarb above):

I clicked on "The main event" and saw the pictures.  OK, it looks very intriguing, but one thing that bothers me and maybe I'm missing some important piece of information, but when I looked at the one photo that showed the sky scene, with the planet at three different locations (its locations at about 2-hour intervals), I felt that at such a distance that that planet is from us, would it really show that much movement within a two-hour period?  That seems like a lot of movement through space, considering how far away the photographic equipment is.  Isn't it photographed from a satellite that is orbiting Earth?

Yowbarb

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Re: DWARF PLANET DISCOVERY HINTS AT HIDDEN SUPER EARTH IN SOLAR SYSTEM
« Reply #8 on: March 29, 2014, 04:15:53 PM »
Posting here headlines from two main articles, of the main scientific discovery announced yesterday! First the Guardian UK followed by Carnegie Institute article in next post.
Pls note asteroid with rings which shouldn't have rings, announced by Brazilians astronomers is actually a big discovery too. It very likely all ties together. Next post will post that article from Carnegie about the dwarf planet discovery (and theory of a super earth.)

The main event:

http://www.theguardian.com/science/2014/mar/26/dwarf-planet-super-earth-solar-system-2012-vp113?CMP=fb_gu

I clicked on "The main event" and saw the pictures.  OK, it looks very intriguing, but one thing that bothers me and maybe I'm missing some important piece of information, but when I looked at the one photo that showed the sky scene, with the planet at three different locations (its locations at about 2-hour intervals), I felt that at such a distance that that planet is from us, would it really show that much movement within a two-hour period?  That seems like a lot of movement through space, considering how far away the photographic equipment is.  Isn't it photographed from a satellite that is orbiting Earth?
ilinda - although the article was from The Guardian, UK the main info and the photo were from the Carnegie Institution of Science. That's the photo you are referring to. I did a screen capture of it. It shows the position at two - hr. intervals - and yes it does seem to move a large distance. Beyond saying that, sorry I don't have an answer for that.
« Last Edit: March 29, 2014, 04:58:57 PM by Yowbarb »

 

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