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Topic: 3200 Phaethon

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	Bambooweb: 3200 Phaethon
		Phaethon's most remarkable distinction is that it approaches the Sun closer than any other numbered asteroid; its perihelion is only 0.140 AU andmdash, which is 58% of Mercury's orbital radius).
		Phaethon's attributes (orbit, size, reflectivity, and association with an annual meteor shower) can be argued as being cometary, except that Phaethon has never been caught exhibiting a coma, gas jets, or dust trail.
		Phaethon is classified as a B-type asteroid because it is composed of dark material; this too fits well with the cometary origin hypothesis.
	www.bambooweb.com /articles/3/2/3200_Phaethon.html (306 words)

	Reference.com/Encyclopedia/3200 Phaethon
		3200 Phaethon (sometimes incorrectly spelled Phaeton) is an Apollo and Mercury-, Venus- and Mars-crosser asteroid with unusual properties, and may be an extinct comet.
		Phaethon's most remarkable distinction is that it approaches the Sun closer than any other numbered asteroid; its perihelion is only 0.140 AU — 58% of Mercury's orbital radius.
		However IAUC 3881 soon after discovery of 3200 Phaethon reported Fred Whipple's observation that "orbital elements of 1983 TB shown on IAUC 3879 are virtually coincident with the mean orbital elements of 19 Geminid meteors photographed with the super-Schmidt meteor cameras".
	www.reference.com /browse/wiki/3200_Phaethon (350 words)

	3200 Phaethon
		3200 Phaethon (sometimes incorrectly spelled Phaeton) is an Apollo and Mercury-crosser asteroid with unusual properties, and may be an extinct comet.
		This name was chosen because Phaethon has a highly eccentric orbit (0.890) that brings it within 0.14 AU of the Sun (well within the orbit of Mercury).
		Phaethon is a B-type asteroid made up of dark material; this too fits well with the theory of its cometary origin.
	www.faqfolio.com /faqfolio/3/32/3200_phaethon.html (353 words)

	3200 Phaethon - The Jiggies Reference Guide (Site not responding. Last check: 2007-10-16)
		Phaethon's name comes from the Greek myth of Phaëton, son of the sun god Helios.
		This name was chosen because Phaethon has a highly eccentric orbit (e = 0.890) that brings it within 0.15 AU of the Sun (well within the orbit of Mercury.
		Phaethon is a B-type asteroid made up of dark material; this too fits well with the theory of its cometary orgin.
	www.jiggies.com /reference/3200_Phaethon (176 words)

	Asteroid (or Comet?) 3200 Phaethon
		In either case, 3200 Phaethon appears to be the source of the meteoroids that flash through Earth's sky each year in mid December as the Geminid meteor shower.
		A second possibility is that 3200 Phaethon is the burned out remains of a comet.
		As is the case with other comets that produce meteor showers, the dust flung off the comet that in the past would have formed 3200 Phaethon tails would have gradually spread around the object's orbit, and would have thus be the source of the Geminid meteors.
	www.windows.ucar.edu /tour/link=/asteroids/asteroid_3200_phaethon.html (640 words)

	Blogger: Email Post to a Friend
		Asteroid 3200 Phaethon might have gotten a tail, of sorts, by bumping into another asteroid.
		Another is that 3200 Phaethon is a comet--a dead one.
		Repeated sunbaking could have vaporized all of 3200 Phaethon's ice long ago, leaving behind a rocky skeleton with a dribble of comet dust in its wake.
	www.blogger.com /email-post.g?blogID=13927821&postID=111975287332925917 (553 words)

	[No title] (Site not responding. Last check: 2007-10-16)
		As 3200 Phaethon passes by the Sun, pieces of Phaethon break off to form the meteoroids that are seen in the Geminid showers, creating the appearance of a tail.
		Ovid also writes that "Phaethon, with flames searing his glowing locks, was flung headlong, and went hurtling down through the air, leaving a long trail behind: just as sometimes a star, though it does not really fly, could yet be thought to fall from the clear sky" (Ovid 58).
		In the myth, Ovid states that Phaethon examined both the sky before him and behind him, "now looking onward to the west, which he was not fated to reach, now back to the east" (Ovid 55).
	www.unc.edu /courses/pre2000fall/clas77/Mythprojects/harroldphaethon.htm (555 words)

	Phaeton - Biocrawler (Site not responding. Last check: 2007-10-16)
		Phaethon is the family and genus name of the Tropicbirds
		3200 Phaethon is a small asteroid, or possibly a comet with some characteristics normally associated with asteroids.
		Phaethon, or Phaethon Prime Rhadamanth Humodified (augment) Uncomposed, Indepconciousness, Base Neuroformed, Silver-Gray Manorial Schola, Era 7043 (the "Reawakening") as is his full name, is the protagonist of the novel The Golden Age by John C. Wright.
	www.biocrawler.com /encyclopedia/Phaethon (331 words)

	3200 Phaethon - Wikipedia, the free encyclopedia
		It was announced on October 14 in IAUC 3878 along with optical confirmation by Charles T. Kowal, who reported it to be asteroidal in appearance.
		The surface temperature at perihelion could reach ~1025 K. For this reason, it was named after the Greek myth of Phaëton, son of the sun god Helios.
		Thus it is classified as an Apollo asteroid but is believed to be an inactive or extinct comet nucleus.
	en.wikipedia.org /wiki/3200_Phaethon (365 words)

	Astronomy & Astrophysics
		The study of asteroids that present sporadic cometary activity is of fundamental importance to address several astronomical problems including the end states of comet nuclei, the abundance of water in main belt asteroids, and its role as a possible source of terrestial water.
		Finally, Phaethon's spectrum shows important differences with the few comet nuclei properly observed at these wavelengths and is similar to the spectra of other peculiar comet-asteroid transition objects.
		Phaethon is more likely an "activated" asteroid, similar to the population of activated asteroids in the Main Belt Comets, than an extinct comet.
	www.aanda.org /index.php?option=com_base_ora&access=doi&doi=10.1051/0004-6361:20065833&Itemid=39 (408 words)

	Meteors (PERSEIDS AND GEMINIDS) (Site not responding. Last check: 2007-10-16)
		Every one and a half years Phaethon plunges sunward from the asteroid belt and swings by the Sun at a distance of 0.14 astronomical units, closer even than the planet Mercury.
		Phaethon's spectra look like those of a rocky asteroid, but its orbit is similar to that of a comet.
		Phaethon's thick mantle gives it the outward appearance of an asteroid, but underneath lies the nucleus of a comet.
	www.il-st-acad-sci.org /planets/meteors2.html (593 words)

	Watch for the Geminids on Wednesday
		A small asteroid called 3200 Phaethon has been discovered in the right orbit, but astronomers aren’t sure how it could be generating enough dust to cause such beautiful meteor showers.
		Officially, 3200 Phaethon is catalogued as a “PHA”—a potentially hazardous asteroid whose path misses Earth’s orbit by only 2 million miles.
		3200 Phaethon might be a comet after all—”an extinct comet,” he says.
	internationalreporter.com /news/read.php?id=1552 (537 words)

	'phaethon' related products for sale
		Phaethon for Kids - an ancient Greek myth about a boy and his father.
		Phaeton, Phaëton, or Phaethon may refer to many different things, 3200 Phaethon is a small asteroid or comet responsible for the Geminids meteor shower
		Phaethon 3 asked for his father's chariot and the right to drive it for a day.
	www.infobooker.com /p/phaethon.html (102 words)

	The mysterious Geminids meteor shower
		One of the earliest ideas was that Phaethon might occasionally collide with other asteroids.
		By studying photographic records of fireballs, scientists have estimated the density of the Geminid meteoroids to be between 1 and 2 gm/cc.
		Many astronomers now believe that Phaethon is an extinct or dormant comet that has accumulated a thick crust of interplanetary dust grains.
	science.nasa.gov /newhome/headlines/ast04dec98_1.htm (1489 words)

	The puzzling Geminid meteor shower peaks on Dec 13/14, 1999 (Site not responding. Last check: 2007-10-16)
		3200 Phaethon, as the asteroid is now known, is in a highly elliptical 1.4 year orbit that brings it within 0.15 AU (astronomical units) of the Sun.
		Phaethon's orbit passes through the asteroid belt just beyond Mars, so at first this hypothesis seemed likely, but more detailed studies disagree.
		Although 3200 Phaethon has some of the characteristics of a comet it does not develop a cometary tail when it passes close to the Sun.
	www.spacescience.com /newhome/headlines/ast06dec99_1.htm (1443 words)

	Greek Mythology Phaethon (Site not responding. Last check: 2007-10-16)
		Once a young boy named Phaethon bragged that his father was Helios.
		Phaethon fell down on his knees and said, "Oh, great Helius, are you truly my father?" "Ah yes, Clymene's boy Phaethon." Helius said, "I am your father." "Prove to me you are my father." Phaethon told him.
		Phaethon was flying among the clouds feeling very proud and happy.
	www.hol.gr /greece/mythology/phaethon.html (303 words)

	The Baffling Geminid Meteors
		Phaethon's sungrazing orbit might be responsible, in part, for the Geminids.
		In July 1996 astronomers saw something in the asteroid belt that could be relevant to the past experiences of 3200 Phaethon.
		Phaethon spends less time there, but it does visit the asteroid belt every 17 months when it reaches its farthest point from the Sun.
	science.nasa.gov /headlines/y2000/ast08dec_1.htm (1222 words)

	Meteor Shower to Peak on Saturday (Site not responding. Last check: 2007-10-16)
		Cooke holds to his theory that 3200 Phaethon is an object that cannot be defined with current astronomical terms.
		Regardless of whether 3200 Phaethon is indeed an asteroid or a comet, it is classified as a potentially hazardous asteroid.
		The closest upcoming approach for 3200 Phaethon is to 1,812,640 miles (2,917,162 kilometers) on December 14, 2093, said Marsden, making contact in the foreseeable future unlikely.
	news.nationalgeographic.com /news/2002/12/1210_021211_geminidmeteor_2.html (570 words)

	Geminid Meteor Shower Peaks Tonight - Planetary News \| The Planetary Society
		Just one problem: Meteor showers are supposed to come from comets, but 3200 Phaethon seems to be an asteroid.
		Officially, 3200 Phaethon is catalogued as a "PHA" -- a potentially hazardous asteroid whose path misses Earth's orbit by only 2 million miles.
		3200 Phaethon might be a comet after all -- "an extinct comet," he says.
	www.planetary.org /news/2006/1213_Savor_the_Shooting_Stars__Geminid.html (452 words)

	Astronomy News
		There is a connection between this shower and an object called 3200 Phaethon.
		Phaethon spends much of its time in the asteroid belt.
		A collision with another asteroid may have created a cloud of debris that follows 3200 Phaethon around the solar system.
	www.activeboard.com /forum.spark?forumID=58381&subForumID=150690&action=viewTopic&commentID=5043914&topicPage= (730 words)

	PC2-3200 - Search Results - MSN Encarta
		Asteroid : study of asteroids – specific objects: 3200 Phaethon asteroid
		In 1983 the Infrared Astronomical Satellite photographed a rapidly moving asteroid now called 3200 Phaethon.
		Meteor showers are very easy to observe, especially if they occur on a clear night with little interference from the Moon.
	encarta.msn.com /encnet/refpages/search.aspx?q=PC2-3200 (77 words)

	Abstract (Site not responding. Last check: 2007-10-16)
		The shape of Phaethon's spectrum is similar to aqueously altered CI/CM meteorites and hydrated minerals.
		Phaethon's spectrum shows important differences with the few comet nuclei properly observed at these wavelengths and is similar to the spectra of other peculiar comet-asteroid transition objects.
		Phaethon is more like an "activated" asteroid (similar to the population of Main Belt Comets reported by Hsieh & Jewitt 2006) than an extinct comet.
	www.psi.edu /PSIseminars/archive_spring_2006/campins.html (193 words)

	Twin Peaks - Asymptotia
		Well, yes and no. They are actually passing through the debris field of a local object, called 3200 Phaethon, which has a highly elliptical orbit around the sun.
		The discovery of 3200 Phaethon occurred in 1983 while Green (PhD student working on his thesis) and Davies (postdoc) found it in rejected IRAS data.
		Phaethon is a rare gem in the Solar System, which travels like a comet, yet looks like an asteroid.
	asymptotia.com /2006/12/13/twin-peaks (1122 words)

	Dust Trail of a Dead Comet Phaethon
		Although the dust trail is extremely faint, it becomes rich due to overlap and easier to detect when the view direction from the Earth and the direction of Phaethon's orbit coincide.
		Table: Chances to detect the Phaethon's dust trail, when Phaethon is not too faint, and observational condition is good.
		Stefano Sposetti took the images of Phaethon on Dec. 14, 18 and 20 using the 40cm f/4 newtonian and CCD.
	www.aerith.net /astro/Phaethon-dust-trail.html (1160 words)

	Bunches & bunches of Geminid meteors
		The source of the Geminid meteoroids is a curious object called 3200 Phaethon that looks like an asteroid, but may be an extinct comet.
		Phaethon will pass through the inner solar system next year, coming within 1.2 AU of Earth on October 16th.
		If 3200 Phaethon is indeed the source of the Geminid meteoroids, then its close approach to Earth next year bodes well for another impressive Geminid shower in 1999.
	science.msfc.nasa.gov /newhome/headlines/ast15dec98_1.htm (940 words)

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