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Topic: 2003 EL61

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	2003 EL61 (Kuiper Belt object)
		The uncertainty in estimates of the size of 2003 EL61 is due to uncertainty in its albedo: it may be a smaller, brighter body or a larger, dimmer one.
		2003 EL61 has an average heliocentric distance of 52 AU (never coming closer to the Sun than Neptune and spending most of its time much further out than Pluto) and a visual magnitude of 17.5, giving it an absolute magnitude of about 0.4 (the largest of any known minor planet.
		This longer period is a result of both the more distant orbit of the satellite from 2003 EL61 and the lower mass of the primary; the orbit is nearly circular.
	www.daviddarling.info /encyclopedia/A/2003_EL61.html (480 words)

	2003 UB313 - Wikipedia, the free encyclopedia
		Claims that 2003 UB has been officially named 'Xena' or 'Lila' are incorrect; 'Xena' is an informal codename used by its discoverers among themselves, and 'Lila' is a name in the address of the website where the object was announced, after the newly-born daughter of one of the discoverers.
		As 2003 UB is larger than Pluto, it might come to be considered as the tenth planet in the Solar system, and was initially described as such by NASA and in media reports of its discovery.
		Methane is very volatile and its presence shows either that 2003 UB has always resided in the distant reaches of the solar system where it is cold enough for methane ice to persist, or that it has an internal source of methane to replenish gas that escapes from its atmosphere.
	en.wikipedia.org /wiki/2003_UB313 (3707 words)

	2003 EL61 - Wikipedia, the free encyclopedia
		2003 EL (also written 2003 EL61), nicknamed "Santa" (non-official designation), is a large and very unusual Kuiper belt object discovered by Mike Brown et al.
		2003 EL is exceptional as its two moons provide the means to determine directly the mass of the system from Kepler's third law.
		2003 EL is classified as a classical trans-Neptunian object with an orbit common for large cubewanos: the perihelion close to 35AU and a significant inclinaton.
	en.wikipedia.org /wiki/2003_EL61 (1754 words)

	2003 EL61
		2003 EL61 is an object in the Kuiper belt, the region of space beyond Neptune that includes Pluto and the large planetoids Quaoar and
		Other than being extremely bright, 2003 EL61 appeared at first to be typical of a type of Kuiper belt objects that astronomers call "scattered Kuiper belt objects." They are called "scattered" because it is believed that they once had a close encounter with Neptune which gravitationally "scattered" these objects onto more eccentric orbits.
		The first moon to 2003 EL61 was discovered on January 28th 2005 by observations at the Keck Observatory.
	www.gps.caltech.edu /~mbrown/2003EL61 (1864 words)

	WorldChanging: Another World Is Here: Welcome, 2003 EL61
		2003 EL61 (it has yet to be given a formal name), although officially announced yesterday, was spotted initially in 2003, and images of it have been found in archives as far back as 1955.
		2003 EL61 was first spotted by Jose-Luis Ortiz at the Sierra Nevada Observatory in Spain in March of 2003; the team's website includes some of the initial details, as well as the first photo used to identify the body.
		The most intriguing thing about 2003 EL61 is its orbit: like Pluto, it has an erratic, off-kilter elliptical orbit taking it close to the orbit of the 8th planet, Neptune; in fact, there are points to 2003 EL61's orbit that lie closer to the Sun than the more distant parts of Pluto's orbit.
	www.worldchanging.com /archives/003213.html (1355 words)

	Bigger than Pluto, possible 10th planet found (Site not responding. Last check: 2007-10-09)
		The object, given the temporary generic name of 2003 UB313 is about 9 billion miles away from the sun.
		Using mathematical formulas, they found a range of sizes for 2003 UB313, with an estimated average showing the approximate diameter of the new body to be about 2,600 kilometers.
		Although this second discover may not be as large as 2003 UB313, scientists have confirmed that 2003 EL61 has its own moon.
	www.juiceenewsdaily.com /0704/planet.html?1122849669609 (755 words)

	And there's more... \| Astronomy Blog
		The first is 2003 EL61 which has a mass of about 32% that of Pluto.
		It would appear that 2003 EL61 was first seen by some astronomers (see below) at Caltech but the first announcement was by astronomers at Instituto de Astrofisica de Andalucia.
		The second object is 2003 UB313 (temporary name) is being called the 10th planet as it seems to be a bit larger than Pluto.
	www.strudel.org.uk /blog/astro/000288.shtml (284 words)

	BBC NEWS \| Science/Nature \| Record spin rate for cosmic body
		However, 2003 EL61, first seen in July, is spinning so fast it has been stretched into the shape of a squashed rugby ball.
		2003 EL61 is big enough that gravity is the dominant force governing it rather than its internal structure.
		It is common for asteroids to spin as fast as 2003 EL61, but these are small, fairly solid objects with low gravity.
	news.bbc.co.uk /2/hi/science/nature/4230056.stm (405 words)

	::Enigmatic Earth:: - 10th Planet maybe bigger than expected - Updated!! (Site not responding. Last check: 2007-10-09)
		Designated as 2003 EL61, the main object in the two-body system is 32 percent as massive as Pluto and is estimated to be about 70 percent of Pluto's diameter.
		The moon around 2003 EL61 is small, making up only about 1 percent of the mass of the system, Brown said.
		On that logic, 2003 UB313 would perhaps be a planet, but it would have to get in line behind a handful of others that were discovered previously.
	www.enigmaticearth.com /forum/topic.asp?TOPIC_ID=133 (3105 words)

	2003 EL61 chart and Orbit Viewer
		We present measurements at optical wavelengths of the spectral reflectance, the rotational light curve, and the solar phase curve of 2003 EL61,.
		Given the mass we recently determined for 2003 EL61 from the orbit of a small satellite, we also constrain the size and albedo.
		The first moon to 2003 EL61 was discovered on January 28th 2005 by observations at the Keck Observatory, the second satellite is fainter than the first, but still detected in three of the five images of the first satellite.
	mysite.wanadoo-members.co.uk /blobrana/database/TNO1.htm (2254 words)

	watersblogged!: Hold the presses! Forget everything I wrote about the new planet!
		In fact, the salient point- that it's the smaller of the two- 2003 EL61 (the designation wrongly attributed to the larger object in some of the initial stories about the "tenth planet") which has the moon- is the reason why a case can be made that it should be considered a planet despite its size.
		No, 2003 UB313 is not a body having a moon, initially thought to be larger than Pluto, but later found not to be.
		It's Ortiz's discovery, 2003 EL61, which turns out to be smaller than Pluto, but larger than any other known KBO other than Pluto and 2003 UB313- which has the moon.
	watersblogged.blogspot.com /2005/08/hold-presses-forget-everything-i-wrote.html (1097 words)

	SPACE.com -- Large New World Discovered Beyond Neptune
		Observations of 2003 EL61 from the Samuel Oschin Telescope at Palomar Observatory on May 6, 2004.
		2003 EL61 orbits the Sun on an elliptical path beyond Neptune in a region of space known as the Kuiper Belt.
		In a series of three images, the object is seen moving across the sky in relation to relatively fixed background stars.
	www.space.com /scienceastronomy/050729_large_object.html (928 words)

	Gravity Simulator
		2003 UB seems to be in a 17:5 resonance with Neptune.
		As 2003 UB travels a little too fast and its perihelion begins to advance on Neptune's position, Neptune pulls it into a slightly slower orbit.
		Neptune and 2003 UB are locked in their 17:5 resonance.
	www.orbitsimulator.com /gravity/articles/newtno.html (471 words)

	Gemini Observatory
		2003 UB313 appears to cross inside of Pluto's orbit but this is due to the fact that 2003 UB313 is tilted by about 45º relative to the rest of the solar system.
		With the recent discoveries of Sedna and now 2003 UB 313 at distances from the Sun well beyond those of the “traditional” planets that we all learned in elementary school, the question: “What is a planet?” has taken on added significance.
		The main differences between 2003 UB 313 and Pluto are: it is probably a bit bigger than Pluto, it is located in the Kuiper Belt about 3-times further from the sun than Pluto, and the inclination of its orbit is about 44° with respect to the plane of the solar system.
	www.gemini.edu /index.php?option=content&task=view&id=142 (1101 words)

	New Pluto-Size Object Discovered in Solar System (Site not responding. Last check: 2007-10-09)
		The object, designated 2003 EL61, is about 930 miles (1,500 kilometers) across, according to Mike Brown, an astronomer at the California Institute of Technology, who led the U.S-based team.
		2003 EL61 and its satellite are located in the Kuiper belt, a region beyond Neptune that includes Pluto and the recently discovered large planet-like objects Quaoar and Orcus.
		Designated 2003 EL61, the object is estimated to be about 930 miles (1,500 kilometers) across and is orbited by a moon.
	news.nationalgeographic.com /news/2005/07/0729_050729_newworld.html (521 words)

	Bigger than Pluto, possible 10th planet found - Wikinews
		The object, given the temporary generic name of 2003 UB, is about 9 billion miles away from the sun.
		Using mathematical formulas, they found a range of sizes for 2003 UB, with an estimated average showing the approximate diameter of the new body to be about 2,600 kilometers.
		José-Luis Ortiz at the Sierra Nevada Observatory in Spain announced the discovery of an object called 2003 EL This object, thought to be larger than Sedna, is the brightest trans-Neptune object next to Pluto.
	en.wikinews.org /wiki/Bigger_than_Pluto,_possible_10th_planet_found (1345 words)

	2003 UB313 is a very unsexy name \| Brilliant Mediocrity (Site not responding. Last check: 2007-10-09)
		We do know that the moon of 2003 EL61 (the third largest object in the Kuiper belt, after 2003 UB313 and Pluto) appears to be a ball of almost pure frozen water.
		We know this because we have been able to look at the sunlight reflected off the moon at infrared wavelengths, and the pattern of the light reflected shows us that there is frozen water and nothing else.
		From the limited information that we have, the moon of 2003 UB313 appears like it might be similar to that of 2003 EL61 (2003 EL61 was code named Santa, by the way, so the satellite is, of course, Rudolph), so we would guess that Gabrielle might be similar, also.
	www.brilliantmediocrity.com /node/50 (665 words)

	A tenth planet
		The new planet 2003 UB313 (until it is permanently named), appears to be between Pluto and the Earth's Moon in size.
		Its orbit is inclined 44° to the ecliptic, the plane of the Earth's orbit.
		The first measurement of the diameter of 2003 UB313 was reported in February 2006.
	www.johnstonsarchive.net /astro/planet10.html (603 words)

	New Scientist Breaking News - Second moon spotted circling cigar-shaped world
		2003 EL61 rotates once every four hours — faster than any other Kuiper Belt Object (KBO) — and is shaped like a cigar that stretches 2000 kilometres on its longest side — nearly the diameter of Pluto.
		In January 2005, a team led by Mike Brown at Caltech in Pasadena, California, US, discovered it is orbited by a moon that may be 300 km wide.
		In their scenario, the crash heated 2003 EL61 so much that it lost most of its ice and was left as mostly rock.
	www.newscientist.com /article.ns?id=dn8402&feedId=online-news_rss20 (580 words)

	Tom’s Astronomy Blog » What About 2003 EL61?
		2003 EL61 at the moment belongs to a class of objects known as “scattered Kuiper belt objects”; called “scattered” because it is thought these objects had a close encounter with Neptune which “scattered” these objects into more eccentric orbits.
		It shouldn’t take too long because 2003 EL61 won’t be hard to confirm; it is now known it had been seen (just not recognized) in images from 50 years ago.
		2003 EL61 (mag 17.2)is about 60% or so of the diameter of Pluto and 2005 FY9 (mag 16.9) is 50-70% last time I checked.
	tomsastroblog.com /?p=359 (811 words)

	New Scientist Breaking News - Second moon spotted circling cigar-shaped world
		The moons orbit a rocky body called 2003 EL61, which is a particularly bizarre member of the Kuiper Belt — a vast ring of icy objects beyond Neptune.
		The researchers believe the moons coalesced from debris after another large KBO smashed into 2003 EL61 when the solar system was forming, more than 4 billion years ago.
		Brown adds that three out of four of the largest KBOs — Pluto, 2003 EL61 and 2003 UB313 (currently known as the "tenth planet") — all have at least one moon.
	www.newscientist.com /article.ns?id=dn8402&feedId=online-news_rss20 (580 words)

	Astronomy News
		The icy object, designated 2003 EL61, is at least 1,500km (930 miles) across, though it may be larger than Pluto, which is 2,274km across.
		2003 EL61 with a heliocentric distance of 51 AU and a visual magnitude of 17.5, gives it an H value of about 0.4.
		Photometric observations constraining the size, shape, and albedo of 2003 EL61, a rapidly rotating, Pluto-sized object in the Kuiper Belt.
	www.activeboard.com /forum.spark?forumID=58381&action=viewTopic&commentID=3666493 (3080 words)

	madisonian.net » Patenting Planets? (Site not responding. Last check: 2007-10-09)
		Today’s New York Times, however, reports on a spat among astronomers, each of whom claims to be the first to have identified a new celestial body — the ball of ice known as 2003 EL61, which some say should displace Pluto as the outermost planet in our solar system.
		A small correction: 2003 EL61 is not the possible tenth planet; it is a smaller object.
		Confusion has arisen in some accounts because the two objects were discovered by the same team at about the same time, and because the controversy over the discovery of 2003 EL61 convinced the team that they should announce 2003 UB313 as quickly as possible.
	madisonian.net /archives/2005/09/13/patenting-planets (986 words)

	New world found on solar system’s edge - Space.com - MSNBC.com
		Other news reports indicating that the object could be twice as big as Pluto are false, according to two astronomers who found the object in separate studies and another expert who has analyzed the data.
		Brown was surprised last night to learn that Ortiz's group had independently found the object, which only on Thursday gained the tag 2003 EL61 from the Minor Planet Center.
		He said it was probably just barely to faint to be spotted in the sky survey done by Clyde Tombaugh that led to the discovery of Pluto 75 years ago.
	www.msnbc.msn.com /id/8756128 (895 words)

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