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(meteorobs) Leonids Storm Updates (ZHR = 8163 from Jordan)
Thanks, Moh'd, for sharing this very exciting report! Those of us who were
not well-positioned for this event salute your dedication in recording as
much data as you did. BTW, please note that the 'meteorobs' email address
has now changed! It is now "meteorobs@jovian.com".
Clear skies over Jordan,
Lew Gramer
------- Forwarded Message
Date: Wed, 24 Nov 1999 17:39:29 +0300
From: Mohammad Odeh <odeh@jas.org.jo>
Organization: Jordanian Astronomical Society (JAS)
To: IMO-news <imo-news@egroups.com>, "Meteor Obs." <meteorobs@latrade.com>,
JASnews <JASnews@onelist.com>, JASmembers <JASmembers@onelist.com>
Subject: [IMO-News] Leonids Storm Updates (ZHR = 8163 from Jordan)
Hello,
Now u can view our detailed report with 1-minute interval or 5-minute
interval. Also, u may download some audio and radio observations from
our site. Don't forget to read the comments from the participants
also. Also, several other updates were added at JAS' Leonids '99
Observation page:
http://www.jas.org.jo/leo99r.html
* During night number of meteors kept increasing by both; radio and visual
observations. After a very quick discussion with the scientists who were
observing from Jordan with JAS. We concluded that Jordan was one of the best
locations to observe the Leonids '99 from ! Where the preliminarily results show
that the peak occurred around 02 AM (04 AM), which is about 40 minutes before
the beginning of dawn (so the radiant was high at the peak). Also, the dawn
didn't affect the observation because the activity decreased before the
beginning of dawn ! Most meteors were faint. However, before dawn brighter
meteors appeared. Most the participants estimated the maximum ZHR (based on the
preliminarily results) to be some how between 7000 - 10 000 !!
* Total observed number of meteors was:
Sana'a Abdo (JAS): 2100 meteors, during 4.0 hours effective time.
Khalid Tell (JAS): 2375 meteors, during 3.6 hours effective time.
Moh'd Odeh (JAS): 2965 meteors, during 3.3 hours effective time.
Ahmad Baker (SCS): 3162 meteors, during about 3.6 hours effective
time.
* ZHR, time of maximum, and rates.
Mr. Robert McNaught, based on one-minute interval, estimated the
ZHR to be 7000 +/- 1000, and it occurred from Jordan at 02:04 +/-
2 minutes (UT). At maximum, McNaught observed 60 meteors per minute.
Several observers agreed that during the maximum, about 7 meteors
appeared simultaneously at once !!
It was very hard to keep following and counting the unexpected
large number of meteors during the maximum, and so many observers
stopped recording, and just enjoyed the show !!
Odeh observed 770 meteors from 02:00 - 02:14 UT ! The maximum
number of meteors based on Odeh observation was at 02:00 - 02:01,
where 91 meteors were observed within this minute ! Which corresponds
to 5460 meteors per hour, or 8163 ZHR ! (Where r = 2.0 , and the
radiant's elevation was 62 degrees).
Overdense meteors were so frequently heard by radio observation,
before the time of the storm. Which was unfortunately stopped
during the storm, because of a failure in the generator.
Based on 1-minute interval, the peak occurred on 18 November
between 02:00 - 02:01 UT, with ZHR of 8163. Also, based on
5-minute interval, the peak occurred between 02:00 - 02:05 UT,
with ZHR of 5855.
Best Wishes
Moh'd
- --
**********************************************************************
Mohammad Shawkat Odeh.
Jordanian Astronomical Society (JAS).
Member of JAS Administrative Board.
P.O. Box 925916 Amman 11110 Jordan.
Fax: (001)(707) 221-0918.
odeh@jas.org.jo
http://Beam.to/odeh (Personal URL)
http://www.jas.org.jo/ (JAS URL)
**********************************************************************
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