Leonid Meteor Shower this weekend...
Posted: Fri Nov 17, 2006 1:23 pm
Leonid Meteor Shower 2006 -- When, Where, and Why
by Melanie Melton Knocke
November 13, 2006
The nights and early morning hours of November 17-19 mark the return of the Leonid meteor shower to the skies of Earth. Will it be worth your while to get outside and take a look? Well, that depends on which expert you listen to and where you live.
For the most part, this year's Leonid's display should be a pretty typical meteor shower. Just days away from New Moon, the sky will be free of moonlight so viewers should be able to see as many as 20 faint, fast-moving meteors per hour during its peak (the evening of November 17, early morning of November 18).
However, unlike a typical meteor shower, astronomers are predicting an unusual "outburst" of meteor activity late November 18 - early November 19 (the date it occurs depends on where you live).
Viewers along the northeastern coast of the United States and Canada, as well as people in Europe and western Africa might get to see a possible "outburst" of as many as 100-600 meteors per hour. This spike in activity is predicted for 11:45 p.m. - 1:33 a.m. EST on November 18-19 (4:45 - 6:33 UT on November 19).
This outburst is tied to Earth's passage through a particularly dense debris trail left by the comet 55P Tempel-Tuttle during its 1932 pass around the Sun. In 1969, Earth passed through this same region with rather spectacular -- though brief -- results (with viewers seeing 2-4 meteors per minute over a 30-minute period). This year's passage probably won't produce quite the same intensity as it did in 1969. Even still, astronomers are predicting anywhere from 100 to 600 meteors per hour. (The predictions vary depending on when Earth actually passes through the trail: earlier, fewer meteors -- later, more meteors.)
Even at 100 meteors per hour, the Leonids won't be as spectacular as other showers. Traditionally, the meteors that make up this shower are much smaller and therefore fainter when they hit Earth's atmosphere and burn up. In addition, these are usually fast-moving meteors, so you have to look quick for those faint streaks.
As a result, it is especially important to observe the Leonid shower from dark skies. For a change, you don't have to worry about the Moon during this shower. Its thin, waning crescent shape doesn't rise until just before sunrise on the 18th and 19th, so it won't interfere and drowned out any meteors. However, those pesky city lights will. So, if you are going to observe the shower, make an effort to drive to a location that has few if any lights nearby. (That may require quite a bit of driving these days, but it should be worth it.) Be sure and pack a lawn chair, a blanket, and a thermos filled with a hot beverage.
For more meteor shower observing tips, visit Meteor Showers: Where, When, and How to Look for Them.
Meteor showers offer a great excuse to sit outside and enjoy nature -- just be sure to pack warm clothes, these November nights get chilly.
Looks like another good viewing is setting up for tomorrow night!
by Melanie Melton Knocke
November 13, 2006
The nights and early morning hours of November 17-19 mark the return of the Leonid meteor shower to the skies of Earth. Will it be worth your while to get outside and take a look? Well, that depends on which expert you listen to and where you live.
For the most part, this year's Leonid's display should be a pretty typical meteor shower. Just days away from New Moon, the sky will be free of moonlight so viewers should be able to see as many as 20 faint, fast-moving meteors per hour during its peak (the evening of November 17, early morning of November 18).
However, unlike a typical meteor shower, astronomers are predicting an unusual "outburst" of meteor activity late November 18 - early November 19 (the date it occurs depends on where you live).
Viewers along the northeastern coast of the United States and Canada, as well as people in Europe and western Africa might get to see a possible "outburst" of as many as 100-600 meteors per hour. This spike in activity is predicted for 11:45 p.m. - 1:33 a.m. EST on November 18-19 (4:45 - 6:33 UT on November 19).
This outburst is tied to Earth's passage through a particularly dense debris trail left by the comet 55P Tempel-Tuttle during its 1932 pass around the Sun. In 1969, Earth passed through this same region with rather spectacular -- though brief -- results (with viewers seeing 2-4 meteors per minute over a 30-minute period). This year's passage probably won't produce quite the same intensity as it did in 1969. Even still, astronomers are predicting anywhere from 100 to 600 meteors per hour. (The predictions vary depending on when Earth actually passes through the trail: earlier, fewer meteors -- later, more meteors.)
Even at 100 meteors per hour, the Leonids won't be as spectacular as other showers. Traditionally, the meteors that make up this shower are much smaller and therefore fainter when they hit Earth's atmosphere and burn up. In addition, these are usually fast-moving meteors, so you have to look quick for those faint streaks.
As a result, it is especially important to observe the Leonid shower from dark skies. For a change, you don't have to worry about the Moon during this shower. Its thin, waning crescent shape doesn't rise until just before sunrise on the 18th and 19th, so it won't interfere and drowned out any meteors. However, those pesky city lights will. So, if you are going to observe the shower, make an effort to drive to a location that has few if any lights nearby. (That may require quite a bit of driving these days, but it should be worth it.) Be sure and pack a lawn chair, a blanket, and a thermos filled with a hot beverage.
For more meteor shower observing tips, visit Meteor Showers: Where, When, and How to Look for Them.
Meteor showers offer a great excuse to sit outside and enjoy nature -- just be sure to pack warm clothes, these November nights get chilly.
Looks like another good viewing is setting up for tomorrow night!