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(meteorobs) Perseid data Aug 12-13 LANMA (Netherlands)
Dear All,
A nice Perseid display here in the Netherlands, but iffy weather. A
northwest wind over the warm North Sea and lake IJssel generated fields of
clouds that went landinwards. Thus, observing was a coming and going of
clouds, Lim. mags. went up and down, periods with full or partial cloud
cover and some clear periods. Below a table with my data with cloud
percentage not more than 25%. Clouds made us stop at 0h UT.
A nice activity nevertheless, preliminary calculations from data by Koen
Miskotte and me suggest rather normal Perseid Zenith Hourly rates in the
order of 60-80. Many rather bright Perseids, but not abnormal I suggest. No
real signs of an outburst. Koen noted 2-3 fireballs in very early twilight
though.
Most beatifull meteor was a kappa Cygnid appearing at 23:05:56 UT, -5 with
flares and bright blue. Still enjoyed this night. Data in table below.
- Marco Langbroek
Dutch Meteor Society (DMS)
Date: August 12/13 1999
Loc.: Biddinghuizen, the Netherlands, 52d 29' N, 5d 37' E
Obs.: Marco Langbroek LANMA
UT Teff Lm Per kCyg dAqr Spo F
20:20-20:45 0.35 5.7 7 0 0 0 1.00
21:02-21:10 0.13 6.1 3 0 0 0 1.25
21:10-21:20 0.15 6.7 7 1 0 0 1.10
21:20-21:37 0.27 6.5 6 1 0 3 1.10
22:08-22:40 0.50 6.8 17 0 0 4 1.00
22:48-23:27 0.58 6.4 26 2 0 7 1.00
23:49-00:00 0.18 6.3 5 0 1 3 1.00
TOTAL 2.17 <6.4> 71 4 1 17 tot. 93
-5/ -3 -2 -1 0 +1 +2 +3 +4 +5
+6 <m>
Sporadics 0 1 0 0 0 2 4 2 5 3
0 2.82
Perseids 0 2 1 3 8 7 9 14 19 6
2 2.45
k Cygnids 1 0 0 0 1 1 0 0 1
0 0
d Aquarids 0 0 0 0 0 0 0 1 0
0 0
Casper ter Kuile, Dutch Meteor Society (DMS)
Akker 145, NL-3732 XD, De Bilt, The Netherlands
Tel. +(31)-30-2203170, Fax. +(31)-30-2202695
GSM-BEN: +(31)-6-24242445, GSM-KPN: +(31)-6-53270844
E-mail_1: pegasoft@accu.uudot nl
E-mail_2: dms-web@wxsdot nl
DMS website: http://home.wxsdot nl/~dms-web/index.html
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