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Topic: 243 Ida

	Asteroid Ida and Dactyl
		Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter -- the 243rd asteroid to be discovered since the first one was found at the beginning of the 19th century.
		This view of the asteroid 243 Ida was acquired by the Galileo spacecraft at ranges of 3,057 to 3,821 kilometers (1,900 to 2,375 miles) on August 28, 1993, about 3.5 minutes before the spacecraft made its close approach to the asteroid.
		Ida is the large object to the left and Dactyl is the small object to the right.
	www.solarviews.com /eng/ida.htm (1056 words)

	243 Ida - Wikipedia, the free encyclopedia
		243 Ida is a Main belt asteroid that was imaged by the Galileo probe on August 28, 1993.
		Ida was discovered by Johann Palisa on September 29, 1884 in Vienna.
		Ida has a small moon, Dactyl, which was discovered by Galileo mission member Ann Harch, while examining the delayed image downloads, discovered on February 17, 1994.
	en.wikipedia.org /wiki/243_Ida (712 words)

	Ida - Wikipedia, the free encyclopedia
		Mount Ida, Arkansas, a city (and mountain?) in Arkansas.
		Plain of Ida, the plain with Gladsheim and Vingolf in Norse mythology.
		Ida, a female given name in Scandinavia, derived from Old Norse ið, which means 'deed' or 'action'.
	en.wikipedia.org /wiki/Ida (143 words)

	243 Ida (Site not responding. Last check: 2007-10-21)
		Ida is also the name of a mountain on the island of Crete, the site of a classic shrine and the cave where Zeus was said to have been reared.
		This view of the asteroid 243 Ida was acquired by the Galileo spacecraft at ranges of 3,057 to 3,821 kilometers on August 28, 1993, about 3.5 minutes before the spacecraft made its close approach to the asteroid.
		Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter the 243rd asteroid to be discovered since the first was found at the beginning of the 19th century.
	www.geocities.com /zlipanov/selected_asteroids/243_ida/243_ida.html (1565 words)

	243 IDA FACTS AND INFORMATION (Site not responding. Last check: 2007-10-21)
		243 Ida is a Main belt asteroid that was imaged by the Galileo_probe on August_28, 1993.
		Ida was discovered by Johann_Palisa on September_29, 1884 in Vienna.
		Ida has a small moon, Dactyl, which was discovered by ''Galileo'' mission member Ann Harch, while examining the delayed image downloads, discovered on February_17, 1994.
	www.witwik.com /243_Ida (638 words)

	Ida (Site not responding. Last check: 2007-10-21)
		Madi: Hello, we are astronauts exploring the asteroid named 243 Ida. It is a small asteroid in the asteroid belt between Mars and Jupiter.
		Ida is part of the S class, also part of the Koronis family.
		We found many of the facts about it interesting, like: Ida has a satellite, it was first seen in 1991, and it was 1500 miles away, it is 32 miles long, it was caused by a catastrophic collision, she has a 5 hour rotation, and and is twice as large as its neighbor, Gaspra.
	eagle.chimacum.wednet.edu /604/2003-04/space_day_2004/ida/ida.html (227 words)

	Asteroid Ida and Its Moon
		This is the first full picture showing both asteroid 243 Ida and its newly discovered moon to be transmitted to Earth from the National Aeronautics and Space Administration's (NASA's) Galileo spacecraft--the first conclusive evidence that natural satellites of asteroids exist.
		Ida is a heavily cratered, irregularly shaped asteroid in the main asteroid belt between Mars and Jupiter--the 243rd asteroid to be discovered since the first was found at the beginning of the 19th century.
		('1993' denotes the year the picture was taken, '243' the asteroid number and '1' the fact that it is the first moon of Ida to be found.) Although appearing to be 'next' to Ida, the satellite is actually in the foreground, slightly closer to the spacecraft than Ida is.
	www.solarviews.com /cap/ast/idamoon.htm (301 words)

	Planetary Society (Site not responding. Last check: 2007-10-21)
		Ida is but one of the numerous asteroids widely scattered throughout a huge region between the orbits of Mars and Jupiter known as the asteroid belt.
		Ida, the 243rd asteroid to be discovered, is a heavily cratered, irregular-shaped (56x24x21 kilometers or 35x15x13 miles) asteroid in the main asteroid belt between Mars and Jupiter.
		Ida is rotating about a line from left to right in each image, with the top portion of the asteroid moving towards you.
	neo.planetary.org /Objects-Impacts/Ida.html (602 words)

	[No title] (Site not responding. Last check: 2007-10-21)
		PHOTOMOSAICS OF ASTEROID 243 IDA Ida.jpg is a set of four photomosaics of asteroid 243 Ida, the second asteroid to be visited by a spacecraft.
		Ida was observed by the Galileo spacecraft on 28 August 1993.
		Longitudes are measured from the crater Afon, just south of the equator at the blunter end of Ida. As with all conformal (true shape) projections, the scale in these mosaics varies, increasing from the centres to the outer edges.
	publish.uwo.ca /~pjstooke/ida.txt (311 words)

	243 Ida (Site not responding. Last check: 2007-10-21)
		The flyby of 243 Ida occurred 28 August, 1993.
		The crater population on Ida could be produced by the same crater flux hypothesized for Gaspra but active 10 times longer, according to Chapman, [1994].
		This is a surprising finding, as Ida is a member of the Koronis family of asteroids which presumably formed from a major collision after the end of the Late Heavy Bombardment era.
	www.agu.org /revgeophys/mcfadd01/node10.html (384 words)

	[41.06] Galileo 243 Ida System Spectral Observations Revisited (Site not responding. Last check: 2007-10-21)
		On August 28, 1993 the Galileo spacecraft encountered the asteroid 243 Ida and its moon Dactyl.
		243 Ida is a SIV subtype of the S type asteroid population.
		A larger red slope corresponds to regions of 243 Ida where ejecta from the crater Azurra are present.
	www.aas.org /publications/baas/v33n3/dps2001/418.htm (331 words)

	DACTYL (ASTEROID) FACTS AND INFORMATION (Site not responding. Last check: 2007-10-21)
		(243) Ida I Dactyl, is a tiny asteroid_moon (diameter 1.4 km) that orbits asteroid 243_Ida with a period of 1.54 days at an average distance of 108 km, with an inclination of 9Â° to Ida's equator.
		It was imaged by the Galileo probe on August_28, 1993; Galileo mission member Ann Harch, while examining the delayed image downloads, discovered it on February_17, 1994.
		The two main hypotheses are that it and Ida formed at the same time, and that it was knocked loose by a later impact.
	www.witwik.com /Dactyl_(asteroid) (170 words)

	Galileo Detects Asteroid Moon, LPIB, May, 1994, Number 71 (Site not responding. Last check: 2007-10-21)
		The photo, of asteroid 243 Ida and its newly discovered natural satellite, was taken by Galileo as the spacecraft flew past Ida last August 28.
		Ida is a member of the Koronis family of asteroids, which scientists believe was created when a larger body perhaps 200-300 kilometers in diameter was smashed relatively recently or at least considerably after the solar system formed some 4.5 billion years ago.
		"Ida's age is baffling, because the craters visible on its surface suggest that it is old, but being a part of the Koronis family suggests it is younger," said Johnson.
	www.lpi.usra.edu /publications/newsletters/lpib/lpib71/galileo71.html (1191 words)

	MSN Encarta - Multimedia - Asteroid 243 Ida
		Asteroids are chunks of rock and metal too small to be considered planets.
		They orbit the Sun and are situated primarily between the orbits of Mars and Jupiter.
		NASA’s Galileo spacecraft photographed the asteroid 243 Ida in 1993.
	encarta.msn.com /media_461526218/Asteroid_243_Ida.html (64 words)

	Associazione Lunar Explorer Italia - Fotografie ed Immagini della Luna, Marte, Il Sistema Solare e l'Universo - ...
		Ida and Dactyl in "natural colors"-25 visteThis color picture is made from images taken by the imaging system on the Galileo spacecraft about 14 minutes before its closest approach to asteroid 243 Ida on August 28, 1993.
		Asteroid Ida (HR)-15 visteThis view of the asteroid 243 Ida is a mosaic of 5 image frames acquired by the Galileo spacecraft's solid-state imaging system at ranges of 3.057 to 3.821 Km on August 28, 1993, about 3-1/2 minutes before the spacecraft made its closest approach to the asteroid.
		Ida is an irregularly shaped asteroid placed by scientists in the S class (believed to be like stony or stony iron meteorites).
	www.lunexit.it /gallery/thumbnails.php?album=65&page=4 (1672 words)

	Introduction
		The second of only three asteroids that have so far been observed close-up, Ida was encountered Aug. 28, 1993, by the Galileo spacecraft on its way to Jupiter.
		Provisionally designated "1993 (243) 1", it received the name Dactyl (and the permanent designation "(243) Ida I") in September 1994.
		Galileo measured variations in the solar magnetic field as it passed by Ida (a similar effect was found at Gaspra).
	www.astro.washington.edu /observatory/PastPresentations/solarsystem/planets2_files/slide0053.htm (490 words)

	243 Ida
		243 Ida is a Koronis asteroid orbiting the Sun between Mars and Jupiter:
		The second of only four asteroids that have so far been observed close-up, Ida was encountered Aug. 28, 1993, by the Galileo spacecraft on its way to Jupiter.
		This indicates the Ida must contain some magnetic material, though its density is far too low for it to be similar in composition to an iron or stony-iron meteorite.
	www.seds.org /billa/tnp/ida.html (529 words)

	16. Asteroid Ida (Site not responding. Last check: 2007-10-21)
		Asteroid 243 Ida appears in this mosaic of 5 images to be about 56 kilometers (35 miles) in length, irregularly-shaped with numerous craters on its surface.
		This view of Ida was taken about 3-1/2 minutes before the spacecraft made its closest approach to the asteroid, when Galileo flew within 2,400 kilometers (1,500 miles) from Ida at a relative velocity of 12.4 km/sec (28,000 mph) at 9:52:05 PDT.
		Ida is an irregularly shaped asteroid placed by scientists in the S class (believed to be like stony or stony- iron meteorites).
	www.oarval.org /slide16en.htm (453 words)

	18. Ida and Dactyl
		Ida belongs to the Koronis family that travels in the main Asteroid Belt between Mars and Jupiter.
		Their locations in these images were used to estimate Dactyl's orbit and Ida's bulk density, which is of great interest because it may indicate whether Ida is composed of rocks that have been thermally processed deep within a collisionally destroyed planetesimal.
		For higher Ida densities, the orbits are elliptical with a large apoapsis (farthest point from Ida), a periapsis (nearest point to Ida) of around 80-85 km, and periods that range from just over a day to many tens of days.
	www.oarval.org /slide18en.htm (1251 words)

	243 Ida (Site not responding. Last check: 2007-10-21)
		243 Ida is an asteroid that was imaged by the Galileo probe on August 28, 1993.
		The probe discovered that Ida had a small moon, an asteroid dubbed Dactyl, only 1.4 km in diameter; this was the first asteroid moon to be discovered.
		The above color picture is made from images taken by the imaging system on the Galileo spacecraft about 14 minutes before its closest approach to asteroid 243 Ida on August 28, 1993.
	www.theezine.net /2/243-ida.html (402 words)

	Asteroid Ida
		Ida is an asteroid which became much more familiar with its close encounter with the planetary explorer spacecraft Galileo.
		Ida's moon is approximately egg-shaped, measuring about 1.2x1.4x1.6 kilometers (.75x.87x1 miles).
		This image is the most detailed picture of the recently discovered natural satellite of asteroid 243 Ida taken by the Galileo spacecraft's solid state imaging camera during its encounter with the asteroid on August 28, 1993.
	hyperphysics.phy-astr.gsu.edu /HBASE/solar/ida.html (502 words)

	:: NASA Quest > Archives :: (Site not responding. Last check: 2007-10-21)
		Ida's moon also has a deeper near-infrared absorption and a different color in the violet than any area on this side of Ida.
		The moon is not identical in spectral properties to any area of Ida in view here, though its overall similarity in reflectance and general spectral type suggests that it is made of the same rock types basically.
		These data, combined with study of further imaging data and more detailed spectra from Galileo's near- infrared mapping spectrometer, may allow scientists to determine whether the larger parent body of which Ida, its moon and some other asteroids are fragments was a heated, differentiated object or made of relatively unaltered primitive chondritic material.
	quest.arc.nasa.gov /galileo/imageprs/idamnclr.html (368 words)

	THIS ASTEROID HAS A MOON ! (Site not responding. Last check: 2007-10-21)
		Ida, was discovered to have a moon which appears as a small dot to the right of Ida in
		The tiny moon, named Dactyl, is about one mile across, while the potato shaped Ida measures about 36 miles long and 14 miles wide.
		The names Ida and Dactyl are based on characters in Greek mythology.
	www.worldnewsstand.net /2002/special/9-1.htm (448 words)

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