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(meteorobs) Leonid report despite weather. Oregon USA
Found a 50% hole in the Oregon Clouds just in time to see the peak.
PHEW!
This was at approximately 10:45UT till approximately 10:50UT I was
seeing many dim meteors with
magnitudes of 3 and 4 mostly. It was averaging close to 1 per second!
Couldn't take my eyes off of this to get the recorder in the car.
But I did get to experience the active peak in an almost impossible
weather situation.
Here is what I recorded after I went and got the tape recorder (after
the meteor "flurry" began to slow down.)
................................................................................................................................
DATE: 11/18-19/02 BEGIN: 10:58 UT END: 11:28 UT
OBSERVER: Dustin Brown
LOCATION: Long: 121.3 West; Lat: 44.0 North
City & State: Near Bend, Oregon USA Elevation: ~ 3600
feet
RECORDING METHOD: Tape recorder and Talking watch
----------------------------------------------------------------------------
OBSERVED SHOWERS: (Use 3 letter Codes)
LEO Leonids
SPO which means Non-Leonids (IE: all others)
----------------------------------------------------------------------------
OBSERVING PERIODS:
0 = None seen; / = shower not watched.
PERIOD(UT) FIELD Teff F LM LEO SPO
10:58-11:28 08h +30 0.48 Varies Varies 43 2
see below for Fs and LMs as
they varied over time
---------------------------------------------------------------------------
MAGNITUDE DISTRIBUTIONS:
(n/a = not applicable due to quarter moon interference)
-3 -2 -1 0 +1 +2 +3 +4 +5 +6 TOTAL
LEO 0 4 1 8 5 9 10 6 n/a n/a 43
---
SPO 0 0 0 0 1 1 0 0 n/a n/a 2
---------------------------------------------------------------------------
SKY OBSCURED:
See F values below varies over time
---------------------------------------------------------------------------
DEAD TIME:
0 minutes used tape recorder and talking watch to keep
eyes on sky.
BREAKS: 1 minute at 11:05 UT to put on warmer gloves
---------------------------------------------------------------------------
LIMITING MAGNITUDE:
See varying values in table below
---------------------------------------------------------------------------
METEOR DATA:
SPEED
# TIME(UT) SHOWER Magnitudes TRAIN(SEC) LM F
(color)
---------------------------------------------------------------------------
1 10:58 LEO
3 4.5 2
2 10:58 LEO 2
3 10:58 LEO 4
4 10:59 LEO 4
5 10:59 LEO 1
6 10:59 LEO 4
7 10:59 LEO 0
8 11:00 LEO 1 (red)
9 11:00 LEO 2
10 11:03 LEO
0 4.5 2.5
11 11:03 LEO 3
12 11:03 LEO 4
13 11:03 LEO 4
14 11:04 LEO 3
15 11:04 LEO 3
11:05 one minute
break LM F
16 11:08 LEO
2 3.5 2.5
17 11:09 LEO 1
18 11:11 LEO
-2 3.5 3.3
19 11:12 LEO 2
20 11:15 LEO
3 4.0 1.67
21 11:15 LEO 2
22 11:15 LEO 3
23 11:16 SPO 1
24 11:16 LEO 0 train
25 11:16 LEO 4
26 11:17 LEO 0
train 4.5 1.25
27 11:17 LEO 1
28 11:19 LEO -1 train
29 11:20 LEO -2 train
30 11:20 LEO 0
31 11:20 LEO 2
32 11:20 LEO 3
33 11:21 LEO -2 train (3 seconds)
34 11:22 LEO
3 3.5 1.25
35 11:22 LEO 1
36 11:23 LEO 0 train
37 11:23 LEO 2
38 11:23 LEO 3
39 11:24 LEO
2 LM F
40 11:25 LEO -2
train 3.5 2.5
41 11:26 LEO 0 train
42 11:27 SPO 2
43 11:27 LEO 0
44 11:28 LEO
3 3.5 3.3
45 11:28 LEO 2
---------------------------------------------------------------------------
REMARKS: At 11:28 the opening in the clouds was only 30% (F=3.3)
and closing so discontinued recording.
Not sure how useful this data is due to varying cloud cover and LM.
During the observations and recordings there seemed to be a shift
towards brighter meteors and trains towards the end of this session.
During the ~10:50 peak I saw only dim meteors but many of them. By
11:19 I was getting negative magnitude meteors and trains though fewer
in number.
I'll be interested to see if that pattern appears in the accumulated
data. If so, then interested in why. Different meteor streams? or
one stream "sorted by size" due to solar wind?
Also I am not totally sure the magnitude 1 RED meteor at 11:00UT was
a LEO. It seemed to come from the radiant but seemed a little too
slow and the color was surprisingly red.
Clear Night Skies,
Dustin Brown
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