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Topic: Orionids

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	Orionids
		The Orionid meteor shower is the second of two showers that occur each year as a result of Earth passing through dust released by Halley's Comet, with the first being the Eta Aquarids.
		The Orionids were frequently observed during the latter years of the 19th century and became the focus of debate during the first quarter of the 20th century.
		During the next 30 years observers became aware that the activity of the Orionids was not consistent, with estimates ranging from a low of 7 in 1900 to a high of 35 in 1922.
	meteorshowersonline.com /orionids.html (1089 words)

	Orionids - MSN Encarta - Orionids (Site not responding. Last check: 2007-10-20)
		The Orionids peak in the predawn hours of October 21st, although some may be seen now through the 26th.
		Radiant of Orionids Meteor Shower The Orionids meteor shower lasts from the 15th to the The radiant of the Orionids is located in the northeast of the
		The Orionid meteor shower is at its height during the third week of October.
	infoseeknow.com /ifsn/orionids.htm (444 words)

	Weekend Meteors
		Orionid meteors won't be nearly as bright as a decaying Proton rocket shell, but the display should be nonetheless pleasing.
		True to their name, the Orionids will appear to stream from the constellation Orion, which is high in the southern sky before dawn.
		Because Orion is near the celestial equator, the Orionids are a good shower for both northern and southern hemisphere observers.
	science.nasa.gov /headlines/y2000/ast18oct_1.htm (1071 words)

	Orionids (Site not responding. Last check: 2007-10-20)
		Amongst a lifetime of accomplishment, Halley predicted the return of the famous comet that bears his name, and was also the first to suggest that meteors might have an extraterrestrial existence after observing a fireball in 1686.
		The Orionids have a reputation of being colourful; observers are encouraged to be mindful of this aspect, and if possible keep a record of their impressions.
		With a duration of eight days, the Orionid peak is relatively flat meaning that roughly similar numbers can be seen in the nights just before and after the peak, however this year the Moon will be a constant irritant.
	members.shaw.ca /weskyscan/orionids.htm (750 words)

	ASV Meteor Section\Web Pages\Stream_Data
		Chi Orionid meteors are slowish in speed (V=25-30°sec) The Chi Orionids have been known for around 100 years however due to them being at maximum near the time of the Geminids they are often overlooked for observing.
		The Sigma Orionids are active from Sept 10 to Oct 26.
		The Eta Aquarids are a rich stream associated with the comet P/Halley as are the Orionids in October.
	www.geocities.com /vodickar/StreamData.htm (2534 words)

	Santa Monica Mirror: Starry Skies Above Santa Monica
		In the case of the Orionids, this means that the activity should be significantly higher after midnight.
		Orionids are not a very rich shower: at its best you can probably expect to see 10 - 20 meteors per hour.
		It is an old stream, the meteors were ejected from the head of the comet a long, long time ago, so they have been dispersed along the entire orbital ellipse almost uniformly, and it would come to us as a great surprise if they appeared this year in unusually large number.
	www.smmirror.com /volume2/issue18/starry_skies.html (892 words)

	AMS Meteor Showers page (Site not responding. Last check: 2007-10-20)
		Observers of the 2006 Orionids were treated to an impressive display of celestial fireworks as rates were three times the normal 15-20 meteors per hour.
		Some bright Orionids were being seen but this gave no clue as to what was going to occur over the next several nights.
		The Orionids (max: October 21/22) during the second half of October have a prolonged, plateau maximum for several nights, usually rich.
	www.amsmeteors.org /showers.html (1951 words)

	Newsletter Sept-October 1998
		The Orionids have been observed from the mid 1800's and are related to the Eta Aquarids and the comet P/Halley.
		Orionids meteors are characterised by their speed, they are quite fast in appearance.
		The Orionids are noted for having several maxima other than the one on the 21/22 October.
	www.geocities.com /vodickar/NewsSeptOct1998.htm (2914 words)

	METEOR SHOWER. The Columbia Encyclopedia: Sixth Edition. 2000 (Site not responding. Last check: 2007-10-20)
		The meteors of a meteor shower all appear to originate at a single point in the sky known as the radiant point, or radiant.
		While the average counting rate of meteors for the entire sky is between 5 and 10 per hr, an observer may see twice this number in one part of the sky during a shower, and in the case of the Perseids, possibly more than 100 in an hour.
		The Andromedids are associated with Biela’s comet, and the Aquarids and Orionids are thought to be associated with Halley’s comet.
	www.bartleby.com /aol/65/me/meteorsh.html (225 words)

	Orionids
		The Orionids are the inbound particles from Halley's Comet.
		Orionid meteors can be seen during the entire month of October and through the first week of November but in much lesser numbers away from the period of maximum activity.
		Observers are urged to watch in one hour increments and to report the number of Orionids and the number of sporadics (random meteors) seen.
	www.xs4all.nl /~carlkop/orionids.html (745 words)

	(meteorobs) Re: 1993 Orionids (Site not responding. Last check: 2007-10-20)
		I counted 81 Orionids in 5 hours; 76 in 4 hours if you throw out the first hour when the radiant was low.
		15 Orionids were of negative magnitudes with a -6 being the brightest seen.
		The following night also had strong Orionid rates but a majority of the bright meteors were gone.
	www.meteorobs.org /maillist/msg01563.html (211 words)

	Xinhua - English
		TIANJIN, Oct. 19 (Xinhua) -- Chinese comet watchers can expect clear views of the Orionids meteor shower on Saturday as 23 meteors per hour are expected, according to local astronomic societies.
		The Orionids meteor shower, active between Oct. 2 and Nov.
		The Orionids arise from the debris left by Halley's comet and the Earth encounters the meteor stream twice each year - the Aquarids in May and the Orionids in October.
	news.xinhuanet.com /english/2006-10/19/content_5226076.htm (102 words)

	SPACE.com -- Guide to the Orionid Meteor Shower
		Expect anywhere from six to 24 meteors per hour from the Orionid peak period, depending on conditions.
		Astronomers call it the "Orionid meteor shower," because the meteors appear to stream out of a point (called "the radiant") in the constellation Orion.
		The Orionids are related to the eta Aquarids, a southern hemisphere meteor shower in May. Both spring from Halley's Comet.
	www.space.com /spacewatch/orionids_guide_041020.html (802 words)

	British Astronomical Association - Meteor Prospects For Autumn/Winter 2006 (Site not responding. Last check: 2007-10-20)
		Produced by debris from Comet 1P/Halley, the Orionids are early autumn’s finest regular shower, producing good observed rates (up to 15-20 meteors/hr in ideal conditions) around their broad peak over October 20-22 (coincident with the weekend).
		Most Orionids are in the medium brightness range (magnitude +2 to +4), but there are also a reasonable proportion of bright meteors among the activity.
		The 2006 Orionids are blessed by an absence of moonlight; the Moon is New on 22 October.
	britastro.org /baa/content/view/175/118 (1332 words)

	Dutch Meteor Society: Orionids 2000
		Observers in that last area are in the position to observe the Orionids.
		Although the Orionids are not known as a very active meteor shower, I hoped to observe an increase in the counts around October 21st.
		For the midpoint between The Netherlands and Spain the radiant of the Orionids rises at 21h UTC and sets at 11h UTC.
	www.xs4all.nl /~dmsweb/orionids/2000/ori2000.html (504 words)

	Two Magical Mornings
		Orionids that appear there will seem short and stubby, a result of foreshortening.
		The October Orionids are cousins of the eta Aquarids, a mostly southern hemisphere meteor shower in May. Both spring from Halley's comet.
		The Orionids are cousins of the eta Aquarids.
	science.nasa.gov /headlines/y2003/20oct_magicmornings.htm (888 words)

	Orionids - Wikipedia, the free encyclopedia
		The Orionids are a meteor shower that occurs throughout October into early November.
		Unlike some showers, Orionids can be seen several days before and after the peak night of October 21-22 (at a frequency of approximately 5-10 per hour).
		The parent body of the Orionids is the famous Halley's Comet.
	en.wikipedia.org /wiki/Orionids (114 words)

	Universe Today - Orionid Meteor Shower, October 21
		If you look towards the constellation of Orion, with its easy to find belt, and be patient, you should see at least a few meteors streak past in the sky.
		Orionids move fast, striking the atmosphere at 66 km/s (148,000 mph), which means they can be more spectacular that other, slower moving meteor showers.
		"Orionid meteoroids strike Earth's atmosphere traveling 66 km/s or 148,000 mph," he continued.
	www.universetoday.com /am/publish/orionids_october_21.html (780 words)

	Casa Grande Valley Newspapers Inc. (Site not responding. Last check: 2007-10-20)
		The Orionids meteors originate from the debris field left by Comet Halley.
		The point from where the Orionid meteors appear to radiate is located within the constellation Orion and is referred to as the radiant.
		The Orionid meteor shower should be at its long-lasting peak very late tonight and for the next few nights.
	www.zwire.com /site/news.cfm?newsid=17344649&BRD=1817&PAG=461&dept_id=222089&rfi=6 (1158 words)

	KnoxNews: Science
		Meteor showers are named after the constellation from which they appear to originate and are denoted by the "-ids" suffix.
		The litterbug responsible for the Orionids is none other than Halley's comet.
		Therefore, the Orionids are the culmination of thousands of visits by Halley's comet.
	www.knoxnews.com /kns/science/article/0,1406,KNS_9116_5068838,00.html (476 words)

	more orionids
		Orionids from Comet Halley's dust debris which is the 'debris' source for the Orionid(ORI) Meteor Shower.
		These are single frame grab from video stream detected on Oct 18, 19,22(peak), 24 am SGP by my in-door video setup.
		The long trail is from a passing satellite.
	www.ykchia.com /more_orionids.htm (70 words)

	October to December \| International Meteor Organization
		A weak minor shower with characteristics and activity nearly coincident with the Orionids, so great care must be taken to separate the two sources by instrumental techniques - especially video or telescopic work - or visual plotting.
		October's waxing gibbous Moon favours the Orionids on October 20/21, as it will be setting - or indeed have long set for the northern hemisphere - by the time the radiant is at a useful elevation (around local midnight in either hemisphere, somewhat before in the north).
		The Orionids were always noted for having several lesser maxima other than the main one above, helping activity sometimes to remain roughly constant for several consecutive nights centred on this peak.
	www.imo.net /calendar/2004/fall (2290 words)

	Sky & Telescope- Dark Nights for the Orionid Meteors - AOL Research & Learn
		The two showers are essentially one and the same; Earth intersects a single, broad stream of meteoroids at two places in its orbit on opposite sides of the Sun.
		The first known Orionid shower was recorded by the Chinese in AD 288, when “stars fell like rain.” The shower has been well observed ever since astronomers first recognized its radiant in 1864.
		To watch the Orionids, bundle up very warmly and bring a sleeping bag; meteor observing is the coldest activity you can do close to home.
	reference.aol.com /space/skyandtelescope/_a/dark-nights-for-the-orionid-meteors/20051017182209990001 (667 words)

	Wisconsin Almanac: Wisconsin Night Sky
		The meteors, or "shooting stars" as they are popularly known, are actually tiny bits of cosmic dust that burn up from friction when they ram into Earth's upper atmosphere.
		In the case of the Orionids, they hit the atmosphere at a blistering 41 miles per second, producing fast, bright meteors that often leave glowing trails.
		The stream of dust that gives us the Orionid meteor shower was born of Comet Halley.
	www.wisconline.com /almanac/sky (347 words)

	Orionids in October (Site not responding. Last check: 2007-10-20)
		The radiant point for the Orionids is a little below, and to the right of, Betelgeuse.
		Orionids tend to travel quite long distances, and often leave trains, which can sometimes be visible for several seconds.
		The Orionids are not a rich shower, and if you see 10 an hour from our latitude, that's good.
	www.rasnz.org.nz /Meteors/Orionids.htm (293 words)

	ORIONIDS JOŠ UVEK MALOBROJNI (Site not responding. Last check: 2007-10-20)
		I Orionids kao i Eta Aquarids potiču od Halejeve komete.
		Maksimum roja je veoma dug i praktično je teško predvideti pravi maksimum za jednu godinu.
		Orionids su brzi meteori (66,4km/s) koji imaju i manje bolide pa daju i duži radio-odjek, visina jonizacije je 115 km i mogu dati 10-70 meteora na sat što ukazuje na dosadašnje njihovo praćenje.
	www.astronomija.co.yu /suncsist/meteo/orionidi/2004/orionidira.htm (111 words)

	Cloudbait Observatory - 2004 Orionids
		The annual Orionid meteor shower occurs when debris from Comet Halley intercepts the Earth at a high velocity.
		This debris stream is somewhat diffuse, so we see activity for several days on either side of the peak.
		The Cloudbait allsky camera recorded several bright Orionids per hour every night for a week before the shower maximum on October 21.
	www.cloudbait.com /science/orionid2004.html (128 words)

	Casa Grande Valley Newspapers Inc.
		The Orionids take their name from the familiar constellation Orion the Hunter, which is where they appear to originate.
		The Orionid meteors are dust particles that came from Halley's Comet, left behind in the comet's orbit.
		The Orionids are relatively swift, so they do produce some nice bright streaks that will penetrate the moonlight.
	www.zwire.com /site/news.cfm?newsid=15415330&BRD=1817&PAG=461&dept_id=222089&rfi=6 (1155 words)

	C&MS: Observing the Orionids (Site not responding. Last check: 2007-10-20)
		As can be seen it very closely matches the present orbit of the Orionid stream---especially when compared to the photographic orbit.
		The orbit of the Orionids thus seems fairly stable.
		Thus, even though the orbit of Halley's Comet has undergone slight changes during the last 2000 years, the ellipse of material that produces the Orionids is fairly stable.
	comets.amsmeteors.org /meteors/showers/orionidobs.html (665 words)

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