Orionids


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Orionids

(or-ÿ -ŏ-nidz, oh-rÿ ) An active meteor shower, radiant: RA 97°, dec +15°, that maximizes on Oct. 22 with a zenithal hourly rate of about 25. The activity has been observed to change by as much as a factor of four between one year and the next. The shower has been the center of controversy firstly because it was thought that the radiant was stationary during the three weeks of activity. This view has now been abandoned: all showers have radiants that move with respect to the stars as the Earth moves along its orbit. Secondly the shower is associated both with Halley's comet and the Eta Aquarids because of similarities in orbital elements.

Orionids

 

a meteor shower with its radiant in the constellation Orion. Linked with Halley’s comet, the Orionids are active every year in the second half of October. The Eta Aquarid meteor shower is also linked with Halley’s comet. The Eta Aqua-rids are active from the end of April to the beginning of May.

Orionids

[ə′rī·ə‚nidz]
(astronomy)
A meteor shower seen in October in the northern hemisphere; its radiant lies in the constellation Orion.
References in periodicals archive ?
Orionids meteor over Druridge Bay captured by Duncan McCall of www.
Tonight, Walltown Quarry will provide the setting for the first event when the Orionids meteor shower is expected to be visible.
The Orionids consist of a stream of dusty particles left behind by Halley's Comet - the same comet featured on the Bayeux Tapestry after appearing shortly before William the Conquerer's invasion of England in 1066.
Active throughout the second half of October, the Orionids reach their peak rate of activity from Tuesday night through to Friday night, with the potential for up to 25 meteors to be visible per hour.
2014 Meteor Shower: Slooh To Have Live Broadcast Of Orionids Meteor Shower October 21 Peak, NASA Assures Ideal Observing Conditions - [(http://au.
Dubietis (2003) analysed the long-term activity from both meteor showers related to comet 1P Halley, the eta Aquariids and the Orionids, and concluded the activity profiles might be cyclical, with a period of 12 years between ZHR maxima.
Unfortunately, although the maxima of the Orionids, Taurids and Leonids in the autumn of 2012 were all observable with little or no interference from moonlight, generally poor weather hampered observations.
They are the Orionids in October, the Leonids in November and the Geminids in December.
A break in any one of several properties with celestial vantage points would give you a wideeye view of the Orionids meteor shower on October 21 and 22.
Libra Sep 24-Oct 23 Watch out for the orionids meteor shower.
The Orionids occurs every year between October 15 and October 29.
Watch a Meteor Shower NAME 2005 DATE RELATED CONSTELLATION Lyrids April 19-24 Lyra the Lyre Eta Aquarids May 3-10 Aquarius the Water Bearer Delta Aquarids July 26-31 Perseids August 10-22 Perseus Orionids October 16-26 Orion the Hunter Leonids November 14-20 Leo the Lion Geminids December 10-15 Gemini the Twins Ursids December 17-25 Between Little Dipper abd the Big Dipper (Ursa Minor and Ursa Major) Source: www.