New Extreme Trans-Neptunian Objects: Towards a Super
... have interacted with something in the past to obtain their distant, eccentric orbits. Unlike objects in the outer Oort cloud (a > 1500 AU), which can have their orbits modified by interactions with the galactic tide, Sedna and 2012 VP113 are too tightly bound to the Sun to be strongly perturbed by o ...
... have interacted with something in the past to obtain their distant, eccentric orbits. Unlike objects in the outer Oort cloud (a > 1500 AU), which can have their orbits modified by interactions with the galactic tide, Sedna and 2012 VP113 are too tightly bound to the Sun to be strongly perturbed by o ...
A Sedna-like body with a perihelion of 80
... System. Eccentricity versus perihelion distance for the approximately 1,000 minor planets with well-determined (multi-year) orbits beyond 10 AU are depicted. There are no known objects with closest-approach distances (perihelia, q) between 55 AU and 75 AU, even though such objects would be closer, a ...
... System. Eccentricity versus perihelion distance for the approximately 1,000 minor planets with well-determined (multi-year) orbits beyond 10 AU are depicted. There are no known objects with closest-approach distances (perihelia, q) between 55 AU and 75 AU, even though such objects would be closer, a ...
Small Bodies in the Outer Solar System
... There are five known dynamical classes of KBOs (Figures 1 and 2). Classical KBOs have semi-major axis 40 < a < 50 AU with moderate eccentricities (e ∼ 0.1 to 0.2) and inclinations. Resonant KBOs are in mean motion resonances with Neptune and generally have higher eccentricities and inclinations than ...
... There are five known dynamical classes of KBOs (Figures 1 and 2). Classical KBOs have semi-major axis 40 < a < 50 AU with moderate eccentricities (e ∼ 0.1 to 0.2) and inclinations. Resonant KBOs are in mean motion resonances with Neptune and generally have higher eccentricities and inclinations than ...
Discovery of a candidate inner Oort cloud planetoid
... planet unlikely, but not impossible. Nonetheless, if such a planet does indeed exist – or did exist at one time – its signature will be unmistakable in the orbital parameters of all additional new objects detected in this region. All should have modest inclinations and perihelion similar to the 76AU ...
... planet unlikely, but not impossible. Nonetheless, if such a planet does indeed exist – or did exist at one time – its signature will be unmistakable in the orbital parameters of all additional new objects detected in this region. All should have modest inclinations and perihelion similar to the 76AU ...
The Kuiper Belt
... On February 17, 2004, astronomers at the California Institute of Technology and (Caltech) Yale University announced that they may have found the largest Edgeworth-Kuiper Belt object, designated 2004 DW, since the discovery of Pluto on February 18, 1930. Based on its current distance of around 48 AUs ...
... On February 17, 2004, astronomers at the California Institute of Technology and (Caltech) Yale University announced that they may have found the largest Edgeworth-Kuiper Belt object, designated 2004 DW, since the discovery of Pluto on February 18, 1930. Based on its current distance of around 48 AUs ...
Whipple: Exploring the Solar System Beyond Neptune Using a
... in an orbit with the perihelion too large to be significantly affected by Neptune, and with an aphelion distance too small to be perturbed by Galactic tidal forces and giant molecular clouds. Processes including only the known bodies in the Solar System do not place objects in orbits of this kind. T ...
... in an orbit with the perihelion too large to be significantly affected by Neptune, and with an aphelion distance too small to be perturbed by Galactic tidal forces and giant molecular clouds. Processes including only the known bodies in the Solar System do not place objects in orbits of this kind. T ...
CLASSICAL KUIPER BELT OBJECTS (CKBOs)
... population of bodies trapped between the Kuiper Belt and Oort Cloud. These would have been emplaced at early times and unseen until recently. 2000 CR105 and Sedna are "just the tip of the iceberg", as they say. The scientific interest lies in how these objects had their perihelia lifted out of the p ...
... population of bodies trapped between the Kuiper Belt and Oort Cloud. These would have been emplaced at early times and unseen until recently. 2000 CR105 and Sedna are "just the tip of the iceberg", as they say. The scientific interest lies in how these objects had their perihelia lifted out of the p ...
The tenth planet by Francis Reddy November 2005
... there’s a physical principle involved,” says Brian Marsden of the Minor Planet Center in Cambridge, Massachusetts. “They could be called dwarf planets, but where do you draw the line?” Asteroids and Kuiper Belt objects are already considered minor planets, and a dwarf-planet class does nothing to el ...
... there’s a physical principle involved,” says Brian Marsden of the Minor Planet Center in Cambridge, Massachusetts. “They could be called dwarf planets, but where do you draw the line?” Asteroids and Kuiper Belt objects are already considered minor planets, and a dwarf-planet class does nothing to el ...
Eris - Rob Walrecht
... In August 2006 the International Astronomical Union introduced a new class of heavenly bodies: the dwarf planets. The new object was named Eris. Eris, Pluto and the asteroid Ceres were the first official dwarf planets. Makemake and Haumea were added to the class in 2008. There will probably be more ...
... In August 2006 the International Astronomical Union introduced a new class of heavenly bodies: the dwarf planets. The new object was named Eris. Eris, Pluto and the asteroid Ceres were the first official dwarf planets. Makemake and Haumea were added to the class in 2008. There will probably be more ...
The Search for Planet X
... early 1800s, when scientists became increasingly convinced that Uranus, discovered accidentally in 1781 by the musician-turnedastronomer William Herschel, was not orbiting quite as Newton’s law of gravity said it should. Several scientists posited that the gravity of a large, undiscovered planet was ...
... early 1800s, when scientists became increasingly convinced that Uranus, discovered accidentally in 1781 by the musician-turnedastronomer William Herschel, was not orbiting quite as Newton’s law of gravity said it should. Several scientists posited that the gravity of a large, undiscovered planet was ...
The Kuiper Belt and the Oort Cloud
... an extreme distance, its discoverers have suggested that it is the first observed body belonging to the inner Oort Cloud. In July 2005, a team of scientists announced the discovery of a KBO that was initially thought to be about 10 percent larger than Pluto. The object, temporarily designated 2003UB ...
... an extreme distance, its discoverers have suggested that it is the first observed body belonging to the inner Oort Cloud. In July 2005, a team of scientists announced the discovery of a KBO that was initially thought to be about 10 percent larger than Pluto. The object, temporarily designated 2003UB ...
Women`s Club Hockey team > places second at NEWCHA finals
... thing seen orbiting the sun to call Sedna a new planet," since the discovery of Pluto in Brown said. "But at the same 1930, and the questions it time, we think it's not reasonraises have astronomers both able to call Pluto a planet, eibaffled and excited. "Very ther." What is exciting for scilittle ...
... thing seen orbiting the sun to call Sedna a new planet," since the discovery of Pluto in Brown said. "But at the same 1930, and the questions it time, we think it's not reasonraises have astronomers both able to call Pluto a planet, eibaffled and excited. "Very ther." What is exciting for scilittle ...
APOM 2014 April
... This week's issue of Naturefeatures an interesting announcement by Chadwick Trujillo (Gemini Observatory) and Scott Sheppard (Carnegie Institution for Science). These two observers have found an object orbiting the Sun, designated 2012 VP113, that they first spotted 17 months ago with the 4-m Blanc ...
... This week's issue of Naturefeatures an interesting announcement by Chadwick Trujillo (Gemini Observatory) and Scott Sheppard (Carnegie Institution for Science). These two observers have found an object orbiting the Sun, designated 2012 VP113, that they first spotted 17 months ago with the 4-m Blanc ...
Solar System – Odds & Ends - Saint Paul Public Schools
... Jupiter, Saturn, Uranus, Neptune, and Pluto are planets. No scientific basis. 2) Historical plus: Mercury through Pluto are planets, as is any newly discovered object larger than Pluto. But why is Pluto’s size the cutoff? ...
... Jupiter, Saturn, Uranus, Neptune, and Pluto are planets. No scientific basis. 2) Historical plus: Mercury through Pluto are planets, as is any newly discovered object larger than Pluto. But why is Pluto’s size the cutoff? ...
90377 Sedna
90377 Sedna is a large minor planet in the outer reaches of the Solar System that was, as of 2015, at a distance of about 86 astronomical units (AU) from the Sun, about three times as far as Neptune. Spectroscopy has revealed that Sedna's surface composition is similar to that of some other trans-Neptunian objects, being largely a mixture of water, methane and nitrogen ices with tholins. Its surface is one of the reddest among Solar System objects. It is most likely a dwarf planet.For most of its orbit it is even farther from the Sun than at present, with its aphelion estimated at 937 AU (31 times Neptune's distance), making it one of the most distant known objects in the Solar System other than long-period comets.Sedna's exceptionally long and elongated orbit, taking approximately 11,400 years to complete, and distant point of closest approach to the Sun, at 76 AU, have led to much speculation about its origin. The Minor Planet Center currently places Sedna in the scattered disc, a group of objects sent into highly elongated orbits by the gravitational influence of Neptune. However, this classification has been contested, because Sedna never comes close enough to Neptune to have been scattered by it, leading some astronomers to conclude that it is in fact the first known member of the inner Oort cloud. Others speculate that it might have been tugged into its current orbit by a passing star, perhaps one within the Sun's birth cluster (an open cluster), or even that it was captured from another star system. Another hypothesis suggests that its orbit may be evidence for a large planet beyond the orbit of Neptune.Astronomer Michael Brown, co-discoverer of Sedna and the dwarf planets Eris, Haumea, and Makemake, thinks that it is the most scientifically important trans-Neptunian object found to date, because understanding its unusual orbit is likely to yield valuable information about the origin and early evolution of the Solar System.