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Topic: Lyrids

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	Lyrids
		The Lyrids are thought to be a very old meteoroid stream due to the fact that particles have spread out through the entire orbit, albeit somewhat unevenly.
		The Lyrid meteoroid stream is steeply inclined at an angle about 80° to the ecliptic, which results in a fairly sharp peak each year.
		The Lyrids are not considered to be a strong radio shower despite the favourable position of the radiant, which at +33° declination is above the horizon for more than 20 hours, similar to that of the Geminids.
	www.skyscan.ca /lyrids.htm (585 words)

	The Lyrid Meteors - 16th to 25th April
		The Lyrids are typically visible between 16th and 25th April with a maximum occuring during April 20-21 (Solar Longitude=31.4 deg), from an average radiant of RA=272 deg, DECL=+33 deg.
		In 1971, Bertil-Anders Lindblad published a Lyrid stream orbit, which had a period of 131 years, that was based on 5 meteors photographed during 1952 and 1953, and, in 1970, Sekanina published a Lyrid stream orbit based on radio meteors which had an average period of 9.58 years.
		The discrepancy in the orbital period of the Lyrids is primarily due to a lack of data.
	www.eaas.co.uk /news/lyrids.html (1801 words)

	the Lyrid meteor shower
		Lyrid meteors stream from a point in the constellation Lyra near Vega--a brilliant blue-white star about three times wider than our Sun and 25 light years away.
		The source of the Lyrid meteor shower is Comet Thatcher (C/1861 G1).
		Lyrid fireballs (a fireball is a meteor brighter than Venus) sometimes leave behind "persistent trains"--smokey trails that can linger in the night sky for minutes.
	spaceweather.com /meteors/lyrids/lyrids.html (540 words)

	April's Lyrid Meteor Shower
		While the Lyrids may not encourage flowers to bloom, there will be a modest sky show on the morning of April 22 when 10 to 15 meteors per hour shoot out of the constellation Lyra.
		Lyrids have been observed for at least 2600 years, according to Chinese records from 687 BC describing "stars that fell [like] rain." This makes it the oldest recorded meteor shower.
		The Lyrid meteor stream is associated with periodic comet Thatcher, which follows an orbit tilted nearly 80 degrees with respect to the plane of the solar system.
	science.nasa.gov /headlines/y2000/ast18apr_1m.htm (1182 words)

	ummah.com forum - View Single Post - Oldest Known Meteor Shower Peaks Thursday
		Typical Lyrid meteors are nearly as bright as the main stars in the Big Dipper, which makes it a good shower for both beginning and experienced observers.
		Although the Lyrids are not usually so spectacular, they are notable as the oldest recorded meteor shower.
		The Lyrid meteor stream is asscociated with periodic comet Thatcher C/1861 G1, whose orbit is tilted nearly 80 degrees with respect to the plane of the solar system.
	www.ummah.net /forum/showpost.php?p=349669&postcount=1 (867 words)

	USATODAY.com - Meteor shower peaks before dawn Thursday (Site not responding. Last check: 2007-11-05)
		It is the brightest star in that region of the sky and the 5th brightest star overall.
		The Lyrid event is typically modest — not as busy as the November Leonids or the August Perseids.
		An occasional bright fireball is sometimes sighted amid the Lyrids, caused by debris perhaps the size of a pea or marble.
	www.usatoday.com /tech/news/2004-04-21-meteor-shower_x.htm (581 words)

	the Lyrid meteor shower
		Lyrid meteors appear to stream from a point in the sky (called "the radiant") near Vega--a brilliant blue-white star about three times wider than our Sun.
		Although Lyrid meteors seem to streak away from the vicinity of Vega, they have nothing to do with that distant star, which is 25 light years away.
		Lyrid meteoroids are bits of dusty debris shed by comet Thatcher (C/1861 G1) here within our solar system.
	www.spaceweather.com /meteors/lyrids/lyrids2003.html (549 words)

	Annual meteor showers - april's lyrids
		In spite of its interesting history, as well as the possibility of an occasional surprise, April’s Lyrid meteor shower is not the sort of meteor shower that garners much attention, or wins over astronomy converts.
		The Lyrid meteor shower, so named because the meteors appear to radiate from the constellation Lyra, is another story.
		Further legwork revealed the Lyrids to be the earliest known recorded meteor shower.
	ks.essortment.com /meteorshowersl_rmmu.htm (866 words)

	Look, Listen, Lyrids!
		Typical Lyrid meteors are about as bright as the stars in the Big Dipper, which makes this shower a good one for beginners.
		: Artist Duane Hilton painted this scene of a smoky Lyrid meteor trail dissipating in the pre-dawn sky of California's Owens Valley, with blossoming wild irises in the foreground.
		Lyrid meteors appear to stream from a point in the sky (called "the radiant") near Vega -- a brilliant blue-white star about three times wider than our Sun.
	science.nasa.gov /headlines/y2001/ast19apr_1.htm?list117699 (1119 words)

	Terrance R. Arter's Personal Information (Site not responding. Last check: 2007-11-05)
		The April Lyrid meteor shower, whose parent body is comet C/1861 G1 (Thatcher), is a member of a small group of meteor streams whose normal activity rates are quite low in most years, but have occansionally produced spectular outbursts at least an order of magnitude above their normal rates.
		A new mean orbit for the April Lyrids was found, including a potential new meteor shower occurring in the early part of April.
		It was then decided to perform a large scale simulation of the April Lyrids, by integrating 20,000 theoretical meteoroids that had been ejected from comet C/1861 G1 (Thatcher).
	www-star.qmw.ac.uk /~tra/Personal.html (683 words)

	Earth Change News on Earth Changes TV on the Web (Site not responding. Last check: 2007-11-05)
		Strangely, the Lyrid activity is not solely dependent on the return of the parent comet.
		Lyrid activity can also be seen late Saturday evening and also on Saturday and Monday mornings but at a reduced rate.
		Although Lyrid meteors may be seen in any portion of the sky the most activity will appear in the north to east quadrant so aim your view due north, northeast, or east.
	www.earthchangestv.com /breaking/April_Part2_2001/PrinterFriendly/0419lyrids.htm (778 words)

	Lyrids 2000 (Site not responding. Last check: 2007-11-05)
		The point from which the Lyrids seems to irradiate is located to east of the constellation of the Lyra and is referred as radiant.
		The Lyrids are visible for the major part of the night, with the radiant that rise about 9 pm (CET).
		To better observe the Lyrids wear appropriate garments for the climate and stay out on a lay-down chair, for a better and comfortable observation.
	www.astrofili.org /~comete_meteore/eng/lyridi_002.htm (352 words)

	Re: (meteorobs) LYRIDS 2003
		I consider the Lyrids general activity to be worse than a major meteor shower's "Could be" let down.
		But the Lyrid activity is generally a bust except for rare occasions.
		If you seen a Lyrid every 2 or 3 minutes, you were seeing an exceptional year.
	www.meteorobs.org /maillist/msg29448.html (299 words)

	The Sky over Berlin 4''05
		The Lyrids in general are a medium strong meteoroid stream with the meteors coming nearly from the zenith, and they are coming within the second half of April.
		According to the Kosmos-Himmelsjahr 2005 the Lyrids are visible from April 12 to 24, according to the IMO calendar 2004 from April 16 to 25, 2004.
		With this the Lyrids are fallings stars which might be good for a surprise and which might be worth to look for with ones own eyes.
	www.surveyor.in-berlin.de /himmel/sky.05.04.html (1075 words)

	Untitled Document
		The annual meteor shower known as the Lyrids reappears from April 19 - 23, peaking on the 21st.
		The Lyrids are composed of slow moving, often bright meteors that seem to originate somewhere near the constellation Lyra.
		The best time to see the Lyrids is in the hours after midnight and early morning hours.
	www.excaliburelectronics.com /navigation04_04.htm (799 words)

	Casa Grande Valley Newspapers Inc. (Site not responding. Last check: 2007-11-05)
		And on April 20, 1803, the residents of Richmond, Virginia, upon being rousted out of bed by a fire bell, were startled to see great numbers of meteors in all parts of the sky.
		In 2004, the Lyrid Meteor Shower is expected to occur from April 16 through April 25.
		The Lyrids are visible through most of the night, with the radiant rising around midnight.
	www.zwire.com /site/news.cfm?newsid=11321179&BRD=1817&PAG=461&dept_id=222089&rfi=6 (377 words)

	Lyrids (Site not responding. Last check: 2007-11-05)
		The Lyrids are typically visible between April 16 and 25.
		The Author generally supports Hindley's view of the great age of the Lyrid stream after noting that, despite a lack of serious planetary perturbations, Lyrid activity is visible every year.
		It is, however, curious that such a large difference exists between the determined orbital period of the Lyrids when photographic and radar data are considered.
	www.maa.mhn.de /Comet/Other/lyrids.html (1542 words)

	BBC News \| SCI/TECH \| April shower of shooting stars
		Called the Lyrids, the meteor shower will reach a peak in the early hours of Sunday morning and will be best viewed from the northern hemisphere.
		To catch a glimpse of the Lyrids, skywatchers are advised to look towards the north.
		The Lyrids is produced by debris from comet Thatcher, which was last seen in 1861 and will not be making another visit to the Earth's part of the Solar System for about 300 years.
	news.bbc.co.uk /hi/english/sci/tech/newsid_1289000/1289283.stm (293 words)

	C&MS: The June Lyrids (Site not responding. Last check: 2007-11-05)
		Interest in the June Lyrids seems to have waned in the latter half of the 1970s and into the 1980s, with only a few individuals continuing to monitor the shower annually---many of them rarely observing around the time of the shower's established date of maximum.
		No convincing June Lyrid radiants were observed by members of the American Meteor Society prior to 1966, nor were any observations present among the extensive visual radiants obtained by A. Herschel, Alphonso King, Cuno Hoffmeister or Ernst Opik.
		John West observed 59 June Lyrids during 1967 to 1982, and found the average magnitude to be 3.02.
	comets.amsmeteors.org /meteors/showers/june_lyrids.html (1232 words)

	April shower kicks off meteor season - Space.com - MSNBC.com
		Lyrid meteor streaks show up in this four-minute time-exposure image of the northern sky, as seen from Indian Cove campground in California's Joshua Tree National Park on April 22, 2003.
		It is the brightest star in that region of the sky and the fifth-brightest star overall.
		Another half-dozen or so meteors not associated with the Lyrids could be visible in any given predawn hour, from dark rural locations, according to Lunsford.
	msnbc.msn.com /id/4798239 (720 words)

	A.L.P.O. METEORS SECTION - 2001 SHOWERS
		I would expect to see 10-15 Lyrid meteors per hour during the late morning hours just before morning twilight on that date.
		The Lyrids will be active for a week before and after the peak, but at much reduced rates.
		The Lyrids appear as swift meteors unless seen near the radiant of near the horizon.
	www.lpl.arizona.edu /~rhill/alpo/meteorstuff/metshwr2001.html (1367 words)

	The Perseids (Site not responding. Last check: 2007-11-05)
		The Lyrids are the second major meteor shower of the year.
		The radiant of Lyrid meteors is in the northern constellation of Lyra (hence the shower's name).
		Visible from April 16th to April 22nd, the Lyrids currently peak on April 21st and 22nd, with the morning of the 22nd between midnight and dawn being best time to observe.
	www.utahskies.org /solarsystem/meteors/lyrids (129 words)

	[No title]
		Known as the Lyrids, the shower appears to emanate from a point in the sky, or radiant, just west of the constellation Lyra, which contains the bright star Vega.
		He said this year should be an excellent one in which to see the Lyrids, since the moon will be absent during the shower, making for a dark sky.
		The Lyrids were also intense in 1922 and 1982.
	www.ulrych.cz /fs/clanky/kick_off.doc (760 words)

	Lyrids
		However, Lyrid meteors showed increased activity during 1996, so there is hope that the shower may be reviving.
		During the Lyrids' heyday 8-10 meteors per hour were common on peak night.
		The Lyrids used to be faint blue meteors hitting our atmosphere at a moderately fast speed of 19.3 miles per second.
	www.theskyscrapers.org /contentmgr/showdetails.php/id/368 (377 words)

	.:: UfoPlaza - UfoPortal ::. - Lyrids Meteor Shower To Begin Today
		The skies should be popping early Tuesday morning as the Lyrid meteor shower peaks in predawn darkness.
		Lyrids are speedy little guys and blaze through the atmosphere at speeds faster than 95 miles per hour.
		Lyra is part of an asterism called the Summer Triangle so, while you're out looking for Lyrids, try and find the three major stars of this famous triangle.
	www.ufoplaza.nl /modules.php?name=News&file=print&sid=540 (494 words)

	SPACE.com -- Meteor Shower Peaks Before Dawn Thursday
		That's when the shower's radiant -- the point from which they appear to emanate -- is highest in the sky.
		The Lyrid event is typically modest -- not as busy as the November Leonids or the August Perseids.
		Map the Lyrid radiant from your location, or just sit back and let the cosmos come to you.
	www.space.com /spacewatch/lyrids_shower_040421.html (644 words)

	Lyrids 2000 \| International Meteor Organization
		Observations of the 2000 Lyrids were hampered by a gibbous waning Moon, which rose before midnight shortly after the radiant of the Lyrids had reached altitudes above 30 degrees.
		Typically, the annual maximum of the Lyrids falls between solar longitudes 32.1 deg and 32.5 deg, corresponding to April 21, 22:10 UT to April 22, 05:40 UT this year.
		The return of the Lyrid meteor shower in 2000 was normal, according to the present information.
	www.imo.net /node/183 (178 words)

	The Sky This Month (Site not responding. Last check: 2007-11-05)
		One of the earliest recorded meteor showers, the Lyrids peak on the night of April 22.
		The Lyrids is a moderate shower expected to hit about 20 to 25 an hour having in the past reached up to 90 an hour.
		And if you see a Lyrid note that the object that produced that streak is in all likelihood about the size of a grain of sand.
	www.synapticsystems.com /sky/whatsup/whatsup0402.html (1784 words)

	NAMN Notes: April 2004
		Note that the peak of the Lyrids (LYR) this year is on April 22 at 04h 10m UT, according to the International Meteor Organization (IMO) in their detailed write-up from their 2004 Meteor Shower Calendar.
		The parent body of the Lyrids, Comet Thatcher, C/1861 G1, was discovered by A.E. Thatcher of New York on April 5th, 1861, and independently by Baeker of Nauen, Germany, with the unaided eye.
		At maximum, the radiant for the Lyrids, the area in the sky where the meteors seem to come from, is at 271 degrees, ie RA 18h 4.2m, Dec +34, which is approximately halfway between the bright star Vega in Lyra and the star mu Herculis.
	www.namnmeteors.org /namnnotes0404.html (2480 words)

	NAMN Notes: April 2003
		The Lyrid shower is the oldest meteor shower for which observations have been found.
		According to the IMO Handbook, of the International Meteor Organization, the Lyrid meteoroid stream - the actual debris shed by its parent comet - is highly inclined in its orbit.
		The Lyrids reach a maximum on April 22nd at 22h00m UT, but can be seen from about April 16th to 25th.
	www.namnmeteors.org /namnnotes0304.html (1874 words)

	CMW: Alpha Lyrids - a July Telescopic Shower (Site not responding. Last check: 2007-11-05)
		We present a study of telescopic and visual data of the Alfa Lyrid shower.
		The Alpha Lyrid shower was discovered in the late 50s of this century by two independent teams.
		Similar results were obtained for other geocentric velocities, and we conclude that there is no trace of Alpha Lyrids activity in our visual observations.
	www.pkim.org /papers/2000alyr99imc.html (850 words)

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