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	Damocloid asteroid - Wikipedia, the free encyclopedia
		Damocloids are asteroids such as 5335 Damocles and 1996 PW that have long-period highly eccentric orbits typical of periodic comets such as Comet Halley, but without showing a cometary coma or tail.
		Damocloids are believed to be nuclei of Halley-type comets that have lost all their volatile materials due to outgassing.
		Damocloids are reddish in color, but not as red as many Kuiper belt objects or Centaurs.
	en.wikipedia.org /wiki/Damocloid (236 words)

	Minor planet
		Eos asteroids have a semi-major axis between 2.99 AU and 3.03 AU, an eccentricity between 0.01 and 0.13, and an inclination between 8° and 12°.
		Alinda asteroids have a mean orbital radius of 2.5 AU and an eccentricity between 0.4 and 0.65 (approximately).
		Trojan asteroids have a mean orbital radius between 5.05 AU and 5.4 AU, and lie in elongated, curved regions around the two Lagrangian points 60° ahead and behind of Jupiter.
	www.askfactmaster.com /Asteroid_group (2327 words)

	Middle East Open Encyclopedia: Minor planet (Site not responding. Last check: 2007-11-02)
		Nysa asteroids have a semi-major axis between 2.41 AU and 2.5 AU, an eccentricity between 0.12 and 0.21, and an inclination between 1.5° and 4.3°.
		Maria asteroids have a semi-major axis between 2.5 AU and 2.706 AU and an inclination between 12° and 17°.
		Pallas asteroids have a mean orbital radius between 2.5 AU and 2.82 AU and an inclination between 33° and 38°.
	www.baghdadmuseum.org /ref/index.php?title=Minor_planet (2591 words)

	Damocloid family
		An unusual collection of asteroids with highly elliptical and, sometimes, highly inclined orbits that resemble those of short-period comets.
		Because of this similarity, it is thought that Damocloids may be the dark remains of old comets.
		If its estimated diameter of 15 km is correct, this would make it one of the biggest Earth-crossing asteroids known.
	www.daviddarling.info /encyclopedia/D/Damocloid_family.html (140 words)

	Planetary Society: Earth-Crossing Asteroid
		Asteroid 2001 OG108 may be the biggest Earth-crossing asteroid ever discovered.
		Members of this group, named after asteroid 5335 Damocles - the first of its type to be discovered - have elliptical orbits that resemble those of short period comets.
		Because of the similarity in orbits, astronomers believe that Damocloids may be the burnt-out remains of old comets.
	planetary.org /html/news/articlearchive/headlines/2001/bigasteroid.html (342 words)

	The world's top minor planet websites (Site not responding. Last check: 2007-11-02)
		Nysas asteroids have a mean orbital radius between 2.41 AU and 2.5 AU, an eccentricity between.12 and.21, and an inclination between 1.5° and 4.3°.
		Alinda asteroids have a mean orbital radius of 2.5 AU and an eccentricity between.4 and.65 (approximately).
		Eos asteroids have a mean orbital radius between 2.99 AU and 3.03 AU, an eccentricity between.01 and.13, and an inclination between 8° and 12°.
	dirs.org /dir-wiki.cfm/minor_planet (1827 words)

	(meteorobs) Excerpts from "CCNet 95/2001 - 30 August 2001"
		The existence or otherwise of a significant population of (say) 0.3 to 2 km dark asteroids in Halley-type orbits is an important one from the perspective of planetary defence.
		But that 20 percent is equalled by the 20 percent of the hazard (by my assumed figures) posed by Damocloids and active comets: objects on moderate-to long-period orbits that must be found on their apparition of impact when they are still at least beyond Saturn, and so in essence all are dark.
		For all new asteroid masses, the influence of the variation of the masses of asteroids in the dynamical model is investigated.
	www.meteorobs.org /maillist/msg22695.html (3207 words)

	A/CC Catalog: Asteroids 4000-19999
		The probe's infrared camera found that Braille has a spectrum that is unusual among asteroids, one usually associated with 4 Vesta, prompting the idea that Braille was originally part of Vesta, or that the two are remnants of a larger body.
		The asteroid had been known only as 1992 KD until a couple of days before the flyby, when it was named after Louis Braille, inventor of the raised-dot reading system for sightless people.
		The population of near-Earth asteroids in coorbital motion with the Earth.
	www.hohmanntransfer.com /cat/an3.htm (2425 words)

	[No title]
		When I began observing asteroids in 1975, I knew hardly anything about them and data about them was not readily available to the amateur.
		Inclination of the asteroid orbit from the Ecliptic in degrees
		since the asteroid passed perihelion), "the argument of perihelion" (angle between the ascending node and the perihelion measured in the direction of the motion), etc..
	astrosurf.com /aude/map/us/AstFamilies2004-05-20.htm (1827 words)

	iqexpand.com (Site not responding. Last check: 2007-11-02)
		F-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences in the ultraviolet absorption and the lack of a water absorption feature at 3 micrometres.
		Categories: Asteroid spectral classes] F-type asteroid is a subdivision of (additional info and facts about C-type asteroid) C-type asteroid s distinguished spectrally by differences in the (Radiation...
		F Type Asteroid F-type asteroid F-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences...
	f-type_asteroid.iqexpand.com (383 words)

	Some named solar system objects
		Includes Earth-approaching asteroids over 5 km in diameter, visited by space probes, or well studied by radar; main belt asteroids over 300 km in diameter or visited by space probes; Jupiter Trojan asteroids over 160 km in diameter.
		A total of 10,792 asteroids (excluding outer solar system objects) are named.
		Another 47 provisional and probable asteroid satellites are reported, plus 13 satellites of trans-Neptunian objects.
	pages.prodigy.net /wrjohnston/astro/somenames.html (127 words)

	(meteorobs) Excerpts from "CCNet 94/2001 - 28 August 2001"
		Called Damocloids after the first of their kind discovered, 5335 Damocles, these asteroids have elliptical orbits that resemble those of short-period comets like Comet Halley.
		Because Damocloids mimic the course of short-period comets, astronomers suspect these unique asteroids might actually be "dead" comets.
		The astronomer points out, however, that the asteroid could potentially pass within 100 million miles of Jupiter, which may result in an orbital adjustment by the giant planet's gravitational manipulation.
	www.meteorobs.org /maillist/msg22667.html (1382 words)

	Planetary Society - Updates from Past Recipients of the Shoemaker NEO Grant (Site not responding. Last check: 2007-11-02)
		In my other activity, developing a system to accurately time asteroid occultations using CCD drift images, software applications Scantracker and Scanalyser were created to coordinate and measure such observations.
		We obtained asteroid lightcurves, which are used to define rotation period and pole orientation.
		A further remarkable KLENOT discovery is the unusual asteroid 2004 RT109, which shows a cometary orbit, but has neither coma nor tail.
	intergalatic.planetfest.org /html/neo/SocietyProjects/ShoemakerGrant/grantupdates.html (1446 words)

	(meteorobs) Excerpts from "CCNet 97/2001 - 4 September 2001"
		It implies that, if Damocloids are extinct comets, they may contain quite compact boulders.
		Or that Damocloids are not comets at all.
		The velocity of the fireball we observed was 65 km/s.
	www.meteorobs.org /maillist/msg22711.html (1817 words)

	FreeLists / az-observing / [AZ-Observing] New Damocloid
		This was announced today and the orbit shows it to be a new member of what are colloquially called 'Damocloids', after the first such object, (5335) Damocles.
		These are asteroidal objects that have very elongated orbits broadly similar to that of Comet Halley.
		This is only the sixteenth 'Damocloid' found so far, so though less exciting than a comet, it is more rare.
	www.freelists.org /archives/az-observing/09-2002/msg00034.html (612 words)

	SRO - News
		This gives the appearance that the asteroid is still, and the stars are moving, the opposite of the truth.
		Details may be viewed from the Asteroid page for the object designated as 2001 SB The image is a composite of two 2-minute exposures showing the trail of the very faint asteroid which was moving across the sky at 2.5 degrees per day.
		An oddball as far as asteroids go, 2001 OK is a Mars-approaching asteroid with unusually high eccentricity and inclination.
	stony-ridge.org /news.htm (2175 words)

	Astronews: Asteroids by Type
		Because there are so many asteroids, they are classified into groups with similar characteristics.
		Damocloids named after Asteroid 5335 Damocles, these objects are in orbits similar to short-period comets (like Halley's Comet).
		They could be old comets that have shed their gaseous envelope and now resemble an asteroid, rather than a true minor planet.
	www.lindoponline.com /alphastro/solar_system/asteroids/type.htm (541 words)

	May '03 ACC News (Site not responding. Last check: 2007-11-02)
		Among many changes in discovery credits, newly named asteroids credited originally to Carolyn Shoemaker alone were updated to also give credit to husband Eugene or to David Levy.
		Looking through the JPL NEAT program's SkyMorph archives found not an asteroid or comet but what may be the fifth closest individual star, a red dwarf estimated to be 7.8 light years away.
		Reiner Stoss, who did all that sleuthing in the archives, explains that "precovery" is finding an object during a previous "apparition." And, with asteroids, the dividing line between apparitions is coming within about 60° of the Sun as seen from the Earth ("solar elongation").
	www.hohmanntransfer.com /news/0305.htm (3041 words)

	Planetary Classification List 4th Edition Index (Site not responding. Last check: 2007-11-02)
		These bodies, commonly known as asteroids, represent the group of bodies from which larger planets were formed, through aggregation over several tens to hundreds of millions of years.
		Damocloids are named after the first such representative discovered, the asteroid Damocles of the Solar System.
		In mature solar systems, these bodies may be members of asteroid belts, or they may have migrated into solitary solar orbits.
	j.dollan.home.bresnan.net /ARCPCLIndex4ed.html (6938 words)

	Minor planet groups/families
		Families are different and result from the catastrophic breakup of a large parent asteroid sometime in the past.
		The Minor Planet Center holds that the name for a group comes from the first asteroid in that group to be named (except for those in the Trojan and more distant groups.) So far, we aren't even close to having a named object for these groups, or even one that is unambiguously in the group.
		These objects could someday be of great practical value, though; after the Moon, they would be the most "accessible" objects in terms of the energy required to reach them, and the energy required to return materials from an Earth-Trojan orbit to the Earth is almost minimal.
	www.projectpluto.com /mp_group.htm (1202 words)

	Damocloid asteroid - Encyclopedia, History, Geography and Biography (Site not responding. Last check: 2007-11-02)
		Damocloid asteroid - Encyclopedia, History, Geography and Biography
		Damocloids are asteroids such as 5335 Damocles and 1996 PW that have long-period highly eccentric orbits typical of periodic comets such as 1P/Halley, but without showing a cometary coma or tail.
		This encyclopedia, history, geography and biography article about Damocloid asteroid contains research on
	www.arikah.net /encyclopedia/Damocloid (145 words)

	Large Earth-Crossing Asteroid Found [Free Republic]
		If the newly discovered asteroid is darker and reflects less light than Sisyphus, but appears just as bright, it must be larger.
		What I like is that this class of asteroids, the ones whose orbits could be perturbed into a collision course, is named after Damocles, as in 'The Sword of Damocles', hanging over all our heads.
		If you buy a kitchen appliance made from asteroid metal, you have to send something into space, perhaps a new 15 cu ft freezer would be balanced by parting with a set of wornout SUV all-season radials.
	www.freerepublic.com /forum/a3b82d5b20f51.htm (3529 words)

	5335 Damocles
		Damocles is the prototype of the damocloid asteroids, asteroids with highly eccentric orbits which cross the orbits of the gas giants, the main asteroid belt, and Mars.
		Its orbit is steeply tilted to the plane of the ecliptic(the sun's equator projected into space, which the planets and asteroids' orbits more or less follow).Its latitude(position relative to the ecliptic)can go as high as 84 degrees, a right angle to the ecliptic being 90 degrees.
		Of all these only Damocles has been observed for a whole synodic cycle (2 oppositions), so all these orbits are more or less preliminary, and we must not forget that Damocles was lost in 1992, soon after its discovery, so the present ephemeris may show significant errors for positions before the 1980's.
	www.geocities.com /mahtezcatpoc/damocles.html (1503 words)

	Cambridge Conference Correspondence
		asteroid with an uncertain orbit can be found at a given time.
		Asteroid 9969 Braille (1992 KD) was encountered on July 29, 1999 by the Deep
		asteroid respectively with the 1.5 m telescope and the NTT of ESO, La Silla.
	abob.libs.uga.edu /bobk/ccc/cc083001.html (6469 words)

	A/CC Catalog: Asteroids Unnumbered, 2000-01
		With that and an eccentricity of 0.895 and inclination of 25.6°, it would seem to be an inactive or extinct comet, but it hasn't been caught displaying cometary activity.
		Based on the standard means for gauging asteroid size through reflectivity, 2000 SG344 is estimated at 30-70 meters/yards on its longest axis.
		However, the IAU technical review comments that, If this object is a man-made rocket booster, it would have a higher reflectivity than a natural asteroid and hence it would have to be smaller (about 15 meters) to reflect as much light as a much darker asteroid.
	www.hohmanntransfer.com /cat/au00.htm (2107 words)

	5141 Tachibana - tScholars.com (Site not responding. Last check: 2007-11-02)
		Asteroid 5141 Tachibana was discovered on December 16, 1990, by Tsutomu Seki at Geisei.
		It bore the provisional designation of 1990 YB until it received its current name.
		Seki named the asteroid after his Kendo club, Tachibana (formed in 1950 in the Kochi prefecture).
	www.tscholars.com /encyclopedia/5141_Tachibana (192 words)

	Damocloid
		Practice English, talk to a funny artificial intelligence robot -- hear its voice (hilarious).
		They are believed to be nuclei of Halley-type comets that have lost all their volatile materials due to outgassing.
		This page was last modified 00:48, 22 October 2005.
	www.cooldictionary.com /words/Damocloid.wikipedia (223 words)

	News - September 2002 (Site not responding. Last check: 2007-11-02)
		New Discovery!: On Sep 04, 2002, the LONEOS survey discovered an apparently asteroidal object which was posted on the NEO Confirmation Page due to its unusual motion.
		The LONEOS team discovered another so-called damocloid, an asteroid moving on a long-periodic cometary orbit.
		The period of this asteroid is about 328 years.
	www.fg-kometen.de /news/news0209e.htm (1008 words)

	(65407) 2002 RP120 - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-11-02)
		(65407) 2002 RP holds the dubious distinction of being the most eccentric of the numbered asteroids (as of July 2004).
		Its classification is uncertain, as it is at once a Damocloid (a highly eccentric, highly inclined object likely to be an extinct comet) and a scattered disk object (a Trans-Neptunian object with a very eccentric orbit, likely ejected from the ecliptic by Neptune).
		(For other objects and regions, see:, Asteroid moons and the Solar system)
	encyclopedia.learnthis.info /_/_6/_65407__2002_rp120.html (114 words)

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