
	Where results make sense

Topic: 1999 JM8

Related Topics

Pencil

HMS Cossack

Asa Candler

Juhurim

Fluid Dynamics

French Revolution

Tallinn

Eddie Gray

260s

James Ritty

Piper Alpha

Erice

In the News (Tue 22 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	1999JM8_planning.html (Site not responding. Last check: 2007-10-31)
		1999 JM8 approaches within 0.057 AU of Earth on 1999 July 30, providing an outstanding opportunity to study its physical properties.
		1999 07 24 17:00:00 P 420950.7D0 0.3 8560.D6 -14 -14 Benner, L. Corr'n of +0.5 Hz to soln 21 from center freq of cw echo w/0.24 Hz res'n 1999 07 24 19:00:00 R 69.426792 5.0 8560.D6 -14 Benner, L. Corrn of -4 us to soln 21 w/0.5 us baud.
		The orientation of 1999 JM8 in this image is similar to the orientation seen on July 24 and August 1.
	echo.jpl.nasa.gov /asteroids/1999JM8/html/1999JM8_planning.html (1774 words)

	JM8 (Site not responding. Last check: 2007-10-31)
		Asteroid 1999 JM8 bears a striking resemblance to Toutatis, a similar-sized, slowly rotating object also studied in detail with radar.
		The asteroid was discovered on May 13, 1999, at a U.S. Air Force telescope in New Mexico that is part of the Lincoln Near Earth Asteroid Research Project.
		The density of craters on its surface suggest that JM8 is geologically old, and is not a chip off of a parent asteroid.
	partners.nytimes.com /library/national/science/asteroid-jm8.1.html (94 words)

	1999 JM8
		The new images of asteroid 1999 JM8 were obtained in late July and early August from observations with NASA's Goldstone Solar System Radar in California and the Arecibo Observatory in Puerto Rico.
		Further analysis is required to determine the object's exact shape and rotation state, but the images clearly show a peculiarly shaped object with an average diameter of about 3.5 km (2 miles) and an unusually slow, possibly complex, rotation.
		Although 1999 JM8 passes quite close to Earth in celestial terms, it is unlikely to prove a direct threat to the planet for at least the next few centuries (by Peter Bond).
	www7.pair.com /arthur/meteor/archive/archive9/Nov99/msg00489.html (545 words)

	A Solar System Photo Gallery (Site not responding. Last check: 2007-10-31)
		1999 JM8 is an Earth-approaching asteroid about 1 km in diameter.
		1999 JM8 is shown in this radar image taken 2 August 1999 from the Arecibo Observatory at a range of 8,500,000 km.
		1999 JM8 is an Earth-approaching asteroid about 3.5 km in diameter.
	pages.prodigy.net /wrjohnston/astro/gallery-2b.html (322 words)

	Radar images of an Earth-crossing asteroid
		The radar images of this Earth orbit-crossing asteroid, known as 1999 JM8, reveal a several-mile-wide object with a peculiar shape and an unusually slow and possibly complex spin state, says Lance Benner, of NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., who led the team of astronomers.
		Scott Hudson, of Washington State University, an expert in using radar images to determine the shapes of asteroids, added that at this stage of the analysis, the resemblance of 1999 JM8 to Toutatis, a similar sized, slowly rotating object also studied in detail with radar, is striking.
		Realizing that 1999 JM8 would make a good radar telescope target, astronomers Lance Benner and Steve Ostro of JPL organized observations and radar data collection with the Arecibo and Goldstone telescopes.
	www.eurekalert.org /pub_releases/1999-08/CUNS-Rioa-260899.php (782 words)

	Ground Radar Returns Detailed Images Of Passing NEO
		With an average diameter of about 3.5 kilometers (2 miles), 1999 JM8 is the largest of the so-called potentially hazardous asteroids ever studied in detail.
		The asteroid was discovered on May 13, 1999, at a U.S. Air Force telescope in New Mexico that is part of the Lincoln Near Earth Asteroid Research Project, managed by the Lincoln Laboratories of the Massachusetts Institute of Technology.
		The discovery provided adequate notice for radar observations to be scheduled at Goldstone from July 18 to August 8 and at Arecibo from August 1-9 during the asteroid's close approach to 8.5 million kilometers (5.3 million miles), the equivalent of 22 Earth-Moon distances.
	www.spacedaily.com /news/asteroid-99g.html (785 words)

	Radar images capture big, slowly tumbling asteroid
		With an average diameter of about 3.5 kilometers (2 miles), 1999 JM8 is the largest near-Earth asteroid ever studied in detail.
		Although this object can pass fairly close to Earth in celestial terms, astronomers concur that an actual encounter with Earth is not of concern in the next few centuries.
		Asteroid 1999 JM8 bears a striking resemblance to Toutatis, a similar-sized, slowly rotating object also studied in detail with radar, said Dr. Scott Hudson of Washington State University, who is an expert in using radar images to determine the shapes of asteroids.
	www.jpl.nasa.gov /releases/99/1999jm8.html (755 words)

	Telescopes reveal detailed images of asteroid
		Image of asteroid 1999 JM8 taken from data collected by the Arecibo Observatory Aug. 5, 1999.
		The radar images of this Earth orbit-crossing asteroid, known as 1999 JM8, reveal a several-miles-wide object with a peculiar shape and an unusually slow and possibly complex spin state, said Lance Benner, of NASA's Jet Propulsion Laboratory (JPL), Pasadena, Calif., who led the team of astronomers.
		Scott Hudson, of Washington State University, an expert in using radar images to determine the shapes of asteroids, added that at this stage of the analysis, the resemblance of 1999 JM8 to Toutatis, a similarly sized, slowly rotating object also studied in detail with radar, is striking.
	www.news.cornell.edu /http://www.n/Chronicle/99/9.2.99/asteroid.html (705 words)

	APOD: September 1, 1999 - 1999 JM8: A Rock Too Close (Site not responding. Last check: 2007-10-31)
		Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
		1999 JM8 silently passed only 8.5 million kilometers from the Earth in early August.
		1999 JM8 missed the Earth, thousands of similar but unknown asteroids likely exist that cross Earth's orbit.
	antwrp.gsfc.nasa.gov /apod/ap990901.html (137 words)

	Астронет > 1999 JM8: A Rock Too Close
		Explanation: Nearly four kilometers across, the huge rock known as 1999 JM8 silently passed only 8.5 million kilometers from the Earth in early August.
		The small asteroid was completely unknown before May. Every few centuries, a rock like this impacts the Earth, with the potential to disrupt modern civilization.
		In fact, four asteroids have passed inside the orbit of the Moon within the last decade.
	www.astronet.ru /db/msg/1162905 (174 words)

	Follow-up astrometry (Site not responding. Last check: 2007-10-31)
		Most of new fast moving objects are confirmed and measured (or denied) rapidly after announcing the discovery as data of MPECs show.
		The 1998, 1999, 2000 and 2001 statistics shows that the Klet' Observatory was the second world most prolific site producing astrometry of PHAs published in Minor Planet Electronic Circulars, the LINEAR project was the first.
		The 1999 statistics shows that the Klet' Observatory was the second world most prolific site producing astrometry of PHAs and NEAs published in Minor Planet Electronic Circulars, the LINEAR project was the first.
	www.klet.eu /foll.html (1077 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		The object, thought to be several miles wide, was captured by a radar team led by Dr. Lance Benner of NASA's Jet Propulsion Laboratory, Pasadena, CA, after its discovery on May 13, 1999, using NASA's Goldstone radar facility in California and the Arecibo Observatory's radar in Puerto Rico.
		1999 JM8 resembles Toutatis, a similarly sized, slowly rotating asteroid that also crosses Earth's orbit and that last flew past the planet on November 29, 1996, at a close approach of 5.3 million kilometers (3.3 million miles).
		1999 JM8 was discovered with a U. Air Force telescope in New Mexico that is part of MIT's Lincoln Near Earth Asteroid Research project.
	www2.jpl.nasa.gov /files/images/captions/1999jm8.txt (337 words)

	Carter et al. DPS 2003 (Site not responding. Last check: 2007-10-31)
		Searching for Regolith on the Asteroid 1999 JM8 Using Multi-Polarization Radar Imaging.
		Most asteroids, except for small ones (~10 km) with low escape velocities, are expected to have regoliths generated primarily by impact events (McKay et al.
		The small (~7 km across) asteroid 1999 JM8 was observed with both the Goldstone and Arecibo radars during its close approach to Earth (Benner et al.
	astrosun.tn.cornell.edu /~lcarter/papers/dps03.html (328 words)

	[No title]
		Toutatis, 1999 JM8 and 4486 Mithra are slow, complex rotators.
		Glauke is slightly smaller and less elongated than 243 Ida, with radar surface properties near the average for S asteroids in the main belt, in an extraordinarily slow (~50-d) rotation state.
		1999 RQ36, 1991 CS, 1998 ML14, and 2100 Ra-Shalom are unelongated; Castalia and Bacchus may be contact binaries; and Golevka is the most angular object imaged so far.
	research.hq.nasa.gov /code_s/nra/current/NRA-01-OSS-01-PAST/winners.html (4469 words)

	tech: CCNet DIGEST, 20 August 1999
		Our video is avaliable on the web >at http://www.cs.sandia.gov/SEL/apps/energy/meteor.htm > >Mark Boslough >Richard Spalding > >================== >(2) NEW RADAR IMAGES OF ASTEROID 1999 JM8 > >>From Ron Baalke > >Recently discovered asteroid 1999 JM8 passed within 0.06 AU from the >Earth on July 30, 1999.
		Using the Goldstone Deep Space Network antenna >and the Arecibo Observatory, a team led by Steve Ostro from JPL were >able to bounce radar off of this asteroid.
		If >the dreams of science fiction writers are to become a reality and >humans are to colonize space, then the next step is to tap into the >vast resources of the rubble of the solar system.
	www.homoexcelsior.com /archive/technology/msg01228.html (1594 words)

	Cornell News: Asteroid Pictures
		1999 JM8 is chock full of cosmic impacts and dings from solar system travel
		Image of asteroid 1998JM8 taken from data collected by the Arecibo Observatory on August 5, 1999A higher-resolution copy of this photo (768 x 512 pixels, 126K) is available here.
		Originally, the object was found in 1990 by Eleanor Helene of NASA's Jet Propulsion Laboratory, who used the Palomar Observatory on Palomar Mountain, Calif. It was dubbed 1990 HD1, and subsequently it went unseen until last spring.
	www.news.cornell.edu /releases/Aug99/AsteroidPix.bpf.html (834 words)

	abst37-4
		, correspond to optical and radar albedos of 0.02 and 0.06, establishing that 1999 JM8 is a dark object at optical and radar wavelengths.
		The asteroid is in a non-principal axis spin state that, although not yet well determined, has a dominant periodicity of about 7 days.
		1999 JM8 has regions of pronounced topographic relief, prominent facets several kilometers in extent, numerous crater-like features between ~100 m and 1.5 km in diameter, and features whose structural nature is peculiar.
	www.uark.edu /~meteor/abst37-6.htm (2024 words)

	Abstracts for the Planetary Geology & Geophysics Program
		The results will be used in conjunction with Magellan results to investigate the properties of crater halo and parabolic deposits, crater floors and the high reflectivity/low emissivity terrain found in highland areas.
		Additional 70 cm observations planned for the fall of 1999 were not successful due to technical problems but new 13 cm ones were successful.
		Radar observations of Titan in Oct/Nov 1999 were very successful, as were observations of the rings of Saturn.
	research.hq.nasa.gov /code_s/nra/current/NRA-00-OSS-01/PGGabstracts.html (18999 words)

	[No title]
		The accuracy of constraints on the shape of Eros derived from relatively weak echo spectra gives us confidence in physical modeling from much stronger data sets.
		Images of Toutatis, 1999 JM8, and Mithra reveal geologically complex objects in slow, non-principal-axis spin states.
		1998 ML14, 1999 RQ36, 7822 (1991 CS) and Ra-Shalom are unelongated; 1982TA has a triangular pole-on shape; and Castalia, Mithra, and Bacchus are bifurcated and may be contact binaries.
	www.astropa.unipa.it /Asteroids2001/Abstracts/Talks/ostro.doc (578 words)

	ScienceDaily: Radar Images Capture Big, Slowly Tumbling Asteroid
		Dramatic, Close-Up Radar Images Of Asteroids To Be Shown At International Space Conference At Cornell (July 22, 1999) -- Dramatic new close-up radar images of asteroids obtained by the Arecibo 305-meter radio/radar telescope in Puerto Rico will be shown by Steven Ostro of NASA's Jet Propulsion Laboratory (JPL) at the...
		Asteroid Found By Spacewatch Is Fastest Spinning Solar System Object (July 23, 1999) -- A unique near-Earth asteroid discovered last year by the University of Arizona Spacewatch is the fastest spinning solar system object yet found, an international team of scientists report in the July...
		Astronomers Sight An Asteroid's Moon (October 7, 1999) -- Astronomers this week announced their discovery of a moon orbiting an asteroid, in the first images ever obtained of such an object from Earth.
	www.sciencedaily.com /releases/1999/08/990827073615.htm (1900 words)

	archive: SETI Radar images capture big, slowly tumbling asteroid
		>>1999 JM8 is the largest of the so-called potentially hazardous
		>>reveal that 1999 JM8 is a several-kilometer-wide object with a
		This archive was generated by hypermail 2.0b3 on Sat Sep 04 1999 - 15:54:52 PDT
	seti.sentry.net /archive/public/1999/8-99/0185.html (795 words)

	RASNZ Occultation Section - Minor Planet News (August 1999)
		August 13, 1999: A New Census of Killer Asteroids
		Using the radar systems at the National Science Foundation's recently upgraded radio/radar telescope at Arecibo, Puerto Rico, and at NASA's Goldstone Solar System Radar in California, astronomers have obtained the most-detailed pictures yet of an asteroid which passed within 5.3 million miles of Earth earlier this month.
		Astronomers have used the world's two most powerful radar telescopes to make the most detailed images ever obtained for a large asteroid in a potentially Earth-threatening orbit.
	occsec.wellington.net.nz /planet/news/news9908.htm (3851 words)

	Anton Vamplew: Asteroid News
		The radar images reveal a several-mile-wide object with a peculiar shape and an unusually slow and possibly complex spin state.
		On May 13, 1999, the MIT/Lincoln Labs Near-Earth Asteroid (LINEAR) search program re-discovered the object and it became 1999 JM8.
		In early August images of the asteroid were taken with the Arecibo radar system at a resolution of 15 meters (50 feet).
	www.captaincosmos.clara.co.uk /asteroids.html (2565 words)

	Asteroids - Part 2 (Site not responding. Last check: 2007-10-31)
		A selection of 1999 JM8 images is available online at http://echo.jpl.nasa.gov/~lance/1999JM8.html.
		February 8, 1999 - AP Eros turned out not as grand as expected, NASA scientists studying the asteroid said.
		Also known as asteroid 433, Eros was studied by the Near Earth Asteroid Rendezvous satellite in late December.
	www.crystalinks.com /asteroids2.html (3184 words)

	[No title]
		Benner, L. Ostro, K. Rosema, J. Giorgini, D. Choate, R. Jurgens, R. Rose, M. Slade, M. Thomas, R. Winkler, and D. Yeomans (1999).
		Mahapatra, P., S. Ostro, L. Benner, K. Rosema, R. Jurgens, R. Winkler, R. Rose, J. Giorgini, D. Yeomans, and M. Slade (1999).
		Magri, C., S. Ostro, K. Rosema, M. Thomas, D. Mitchell, D. Campbell, J. Chandler, I. Shapiro, J. Giorgini, and D. Yeomans (1999).
	www.psi.edu /pds/asteroid/EAR_A_5_DDR_RADAR_V10_0/document/radarhist.doc (1278 words)

	Science News for Kids: Feature: Killers from Outer Space
		If scientists were to learn that we're on a collision course with one of these objects, they could start looking for ways to avoid disaster.
		With an average diameter of 2 miles, the near-Earth asteroid known as 1999 JM8 is the largest potentially hazardous asteroid yet studied in detail.
		To give people a sense of whether an asteroid could strike Earth, an international group of astronomers adopted the Torino scale in 1999.
	www.sciencenewsforkids.org /articles/20050518/Feature1.asp (1173 words)

Try your search on: Qwika (all wikis)