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(meteorobs) Fwd: Leonids 2001 from Macedonia
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Clear skies,
Lew Gramer <owner-meteorobs@atmob.org>
------- Forwarded Message
To: <imo-news@imodot net>
From: Alek Atevik <atevik@unet.com.mk>
Date: Wed, 28 Nov 2001 18:31:24 +0100
Subject: [IMO-News] Leonids from Macedonia
Hi all,
better late than never :-)
Here are results from the observation of the Leonids on freezing 18 Novembre
.
datum: 18.11.01 from 0 UT till 4,5 UT .
location: v. Letevci, Skopje, Macedonia
coord.: Fi= 41 50 N
lambda= 21 45 E
(h~600 m)
zenith hour rate ZHR calculation
ZHR = FCK N/T
FCK -corrections for clouds (F), for limiting magnitude (C) and
K for ang. distance between zenith and radiant
Radiant loc.(polozba na radijantot):
alfa= 153,2
delta= 22
table 1. ZHR
F=1 (correction for clouds) r=2,0
UT (h min) N spor(*) C K ZHR ZHRerr
0 0 19 5 1,41 2,098 169 39
0 20 22 9 1,41 1,877 175 37
0 40 22 5 1,41 1,704 159 34
1 0 27 7 1,41 1,566 179 35
1 20 27 4 1,41 1,455 167 32
1 40 29 9 1,41 1,366 168 31
2 0 46 4 1,41 1,292 252 37
2 20 36 6 1,41 1,233 188 31
2 40 29 3 1,41 1,184 146 27
3 0 25 3 1,68 1,146 145 29
3 20 36 2 1,68 1,115 203 34
3 40 59 1 1,68 1,092 325 42
4 0 55 3 2,00 1,076 355 48
total 432 61 (for time observing of 260min) =493
NOTE:
(*) - sporadics and other non-Leonids :-)
Magnitude distribution:
UT (h min) -6 -5 -4 -3 -2 -1 0 1
2 3 4 N
============================================================================
========================
0 0 0 0 0 0 0 1 5 8
4 1 0 19
0 20 0 1 0 2 2 2 4 6
2 2 1 22
0 40 0 0 0 1 0 2 3 8
4 3 1 22
1 0 0 0 0 0 0 1 7 9
6 3 1 27
1 20 0 1 0 0 1 3 3 5
8 4 2 27
1 40 0 0 0 0 1 4 5 5
6 6 2 29
2 0 0 0 0 0 3 2 15 13
9 3 1 46
2 20 0 0 0 0 1 5 5 12
5 8 0 36
2 40 1 0 0 0 2 4 3 10
3 4 2 29
3 0 0 0 0 1 1 3 6 5
6 3 0 25
3 20 0 0 0 1 0 4 8 8
8 7 0 36
3 40 0 0 0 0 2 5 13 9
17 9 4 59
4 0 0 0 0 0 0 4 8 13
23 7 0 55
============================================================================
========================
total 1 2 0 5 13 40 85 111
101 60 14 432
The skies were clear, 0% clouds. No wind at all , but very very cold
(Coca-Cola turned to ice cubes), with frost and white frost.
The majority of the group (around 20 people) saw the bolide at 2h56min UT.
Its angular length was 5 degrees (near delta Leonis) and the persistent very
bright train lasted 8,5 minutes. Meteors bright than magnitude -6, we have
captured on photo.
We saw many fireballs, and many meteors too.
Best regards,
Alek Atevik,
Skopje Astronomy Society
------- End of Forwarded Message
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