Orpington Astronomical Society

Astronomy => Alerts! Questions? Discussions... => Topic started by: Rick on Nov 13, 2002, 05:49:00

Title: Leonids predictions
Post by: Rick on Nov 13, 2002, 05:49:00
Check this website for details of a storm predicted for November 19th: http://planetary.org/html/news/articlearchive/headlines/2002/leonids2002.html

Note in particular "United Kingdom: between 3:00 a.m. - 5:00 a.m., with the peak around 4:00 a.m."
Title: Leonids predictions
Post by: Rick on Nov 14, 2002, 05:25:00
A BAA circular adds "The first, due to debris released from the comet in 1766, is expected  around 04h UT on the Tuesday morning of November 19. The same debris produced the first of 2001's storms, over North America."
Title: Leonids predictions
Post by: Mike on Nov 15, 2002, 07:11:00
Is there any particular reason our Leonid Observing Evening is on the Sunday if the peak is on a Tuesday ??
Title: Leonids predictions
Post by: Delphine on Nov 15, 2002, 18:16:00
Sorry I won't be at the observing evening on Tuesday as I will be in Portugal.
Title: Leonids predictions
Post by: Rick on Nov 15, 2002, 23:05:00
The Leonid maximum is traditionally on the 17th, which is why I'd guess that date was chosen. Chances are we won't actually see many Leonids, even if we do stay out in the field til past 23:30 when the radiant rises.

The orbits of the Leonid meteoroids are now rather better understood, so predictions can be made for meteor showers caused by meteoroids shed from the parent comet on particular perihelion passes. It's from one of those calculations that the 04:00 Tuesday morning prediction comes. Given the time, it's probably worth setting an alarm clock for, but not worth arranging a Society observing morning for... :wink:
Title: Leonids predictions
Post by: Rick on Nov 15, 2002, 23:08:00
Delphine, if you're awake at 04:00 GMT (which I guess would be 05:00 in Portugal) on Tuesday morning and the skies are clear, have a look out. You might well see more meteors from there than we'll see from here. :wink:

Enjoy your holiday.
Title: Leonids predictions
Post by: Delphine on Nov 16, 2002, 01:12:00
Many thanks I will.  I am taking my alarm clock with me to ensure that I wake up !!!
Title: Leonids predictions
Post by: Miriam on Nov 17, 2002, 19:57:00
No observing tonight (Sunday 17th November), as the Leonids will occur early Tuesday morning.
Jeff
Title: Leonids predictions
Post by: Delphine on Nov 24, 2002, 19:28:00
I didn't need my alarm clock in Portugal as I was woken up by a very loud thunderstorm!!!
Needless to say i didn't see any Leonids!!