Welcome to the 1999 International Meteor Organization Meteor Shower Calendar. 27, 1999.Amateur astronomers capture radio echoes from fiery meteors in April 99 April's Lyrid Meteor Shower-- Apr. A long-exposure photo shows the Leonid meteor shower over the Stone Dolls in the Republic of North Macedonia on Tuesday. Introduction. The Leonids (/ ˈ l iː ən ɪ d z / LEE-ə-nidz) are a prolific meteor shower associated with the comet Tempel–Tuttle, which are also known for their spectacular meteor storms that occur about every 33 years. 21, 1999. The oldest known meteor shower peaks this year on April 22 A Wild Ride to the Stratosphere-- Apr. Tuning in to April Meteors-- Apr. The Asher-McNaught model successfully predicted even bigger Leonid storms in 2001 and 2002.". 14, 1999. The year promises to be another interesting one, with many major showers free from moonlight interference (except the Quadrantids, eta- Aquarids, Southern delta-Aquarids and Orionids). This image was taken during the 1999 Leonid meteor storm as part of NASA's Leonid Multi-Instrument Aircraft Campaign (Leonid MAC). The image was captured with a 28 mm camera. Using data from the 1998 shower, a number of groups have issued predictions for what can be expected during the 1999 Leonid shower. These outbursts of meteor activity are best seen when the parent object, comet 55P/Tempel-Tuttle, is near perihelion (closest approach to the sun). The first great meteor storm in the modern era was the Leonids of November 1833. We carried out a wide-field TV observation of the Leonid meteor shower at the Nobeyama Radio Observatory, from 12(h)30(m) UT through 20(h)15(m) UT on 1999 November 18. (chart courtesy of International Meteor Organization) In their model of the Leonid meteoroid stream, the 1999 storm was caused by a dust trail created when the Leonids parent comet, Tempel-Tuttle, passed by the Sun about 100 years ago. The Leonids are best known for producing meteor storms in the years of 1833, 1866, 1966, 1999, and 2001. A meteor every couple of minutes is good, and certainly worth going outside to look, but it is hardly the “brightest shower in human history.” The Leonid meteor storms of the late 1990’s and early 2000’s were much more spectacular, and had rates 10 times greater than the best Perseid display. While a pair of impressive meteor outbursts occurred in 1999 … A meteor shower in August 1583 was recorded in the Timbuktu manuscripts. The 1998 Leonid shower provided an excellent show, but it eluded all attempts of scientists to predict what it was going to be like. Leonid Meteor Shower 2005 LEONID METEOR SHOWER 289 TABLE I Details of Leonid Showers from the 1799 Epoch to Present Time of Max ‚Omax Comet Activity width (¾) Duration Age of Min Obs to Year (UT) (NOV) (J2000.0) node-‚Omax Peak ZHR (degrees)£10¡2 (hours) Moon (days) Node (hours)1799 12.35 232.8 0.23 — — »415¡2 Information about the eta Aquarids meteor shower and Halley's comet.
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