Excellent Prospects for November's Meteor Showers
November 2007 :
Note: This article may contain outdated information
This article was published in the November 2007 issue of The Skyscraper and likely contains some information that was pertinent only for that month. It is being provided here for historical reference only.
On any clear night you can expect to observe one or two
sporadic meteors per hour. These shooting stars are just random
specs of space debris not associated with any major or minor meteor
stream.
But if you want to increase your chances of seeing more than
just a couple of meteors per hour without having to spend an
inordinate amount of time doing so, then it's prudent to wait for
those dates and times when the Earth is predicted to pass through
a known stream of cometary debris.
During the week of November 5-12, the Earth encounters the
remnants of Comet 2P/Encke. The Moon will be New in the middle of
this week, so it will not hamper seeing as many meteors as
possible. Therefore, as long as you position yourself well away
from city lights you will perhaps observe five to ten Taurid
meteors per hour.
Fortunately the Taurids are slow meteors, entering our
atmosphere at only 17-miles per second. Therefore these shooting
stars are also bright. More often than not they are yellow in
color. Fairly frequently they become fireballs that fragment into
multiple meteors.
The best meteor shower display of November, the Leonids, peaks
on the night of the 17th to the early morning of the 18th. There
seems to be some difference of opinion among researchers as to what
level of activity will happen this year.
Some astronomers believe there may be a modest enhancement of
activity, while others insist that the Leonids will be back to
their normal peak level of from 15 to 20 meteors per hour. Who is
correct? We'll know for sure once the Sun rises on the 18th, for the
peak is scheduled for about 11:00 pm or so on the 17th. This display
occurs on a weekend, so most of you should be able to set aside an
hour or two to scan the skies for a few shooting stars.
We are also fortunate that the Moon will set around 11:15 pm
and will not brighten the sky. However, with the shower's peak time
so early, Leo, the constellation from where the meteors appear to
radiate, will be just rising above the east-northeast horizon at
that time. So the number of meteors we see here will likely be
somewhat less than anyone's estimate.
What we may see is quite a few Earth-grazers around the peak
time. These meteors will shoot halfway across the sky as they skim
our atmosphere. Earth-grazers are fun to watch, so I encourage
everyone to go out and take a look.
Leonid meteors are usually very bright since they blaze across
the sky at an amazing speed of 44 miles per second. Most appear to
be green or blue in color as they disintegrate in our upper
atmosphere. About half of them leave trains of dust which persist
for minutes.
Again, make sure you maximize your chances of seeing as many
meteors as possible by observing from a dark sky location. Also, be
comfortable and stay warm, but try not to fall asleep! Hopefully a
few fireballs now and then will encourage you to stay awake.
Keep your eyes to the skies!