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(meteorobs) NAMN Meteor Report: Dec 13/14 (STOWE)
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NAMN VISUAL SUMMARY REPORT
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DATE: 1996 Dec 13/14 BEGIN: 0806 UT END: 1110 UT
OBSERVER: Wes Stone (STOWE)
LOCATION: Long: 122o40' West; Lat: 45o27' North
City & State: Portland, OR Elevation: 200 meters
RECORDING METHOD: Tape Recorder
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OBSERVED SHOWERS: (Use 3 letter Codes)
GEM
HYD
XOR
MON
SPO
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OBSERVING PERIODS:
0 = None seen; / = shower not watched.
PERIOD(UT) FIELD LM F Teff GEM HYD XOR MON SPO
0806 - 0932 5.5h,+30 5.9 1.18 1.43 23 3 1 0 9
0941 - 1110 9h,+55 5.7 1.19 1.49 13 1 1 0 13
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MAGNITUDE DISTRIBUTIONS:
SHOWER -8 -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 TOTAL
GEM 1 1 1 1 2 3.5 7 7.5 9 2 1 36
HYD 1 1 1 0.5 0.5 4
XOR 0.5 0.5 0.5 0.5 2
SPO 0.5 0.5 0.5 1.5 2.5 5.5 10.5 0.5 22
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SKY OBSCURED:
15% FROM: 0806 UT
TO: 1059 UT
20% FROM: 1059 UT
TO: 1110 UT
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DEAD TIME: (none: tape recorder used)
BREAKS: 0932-0941 UT
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LIMITING MAGNITUDE:
STAR STAR STAR STAR
TIME AREA COUNT LM TIME AREA COUNT LM
0806 17 10 5.5
0826 17 11 5.9
0846 17 12 6.0
0906 17 12 6.0
0926 17 12 6.0
0941 17 12 6.0 0941 3 9 5.4/ave: 5.7
1001 17 12 6.0 1001 3 9 5.4/ave: 5.7
1026 17 12 6.0 1026 3 9 5.4/ave: 5.7
1046 17 11 5.9 1046 3 8 5.2/ave: 5.6
(I changed viewing fields at 0941, which allowed me to cover more sky
comfortably but meant that part of my viewing field contained more
skyglow. I averaged areas near the edges of my viewing field.)
MEAN LIMITING MAGNITUDE: 5.8
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METEOR DATA:
SPEED
# TIME(UT) SHOWER MAG (1-5) COLOR TRAIN(SEC) MAP #* ACCURACY*
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1 0812 GEM -1 3
2 0817 GEM 1 3 yellow
3 0819 SPO 3.5 4
4 0821 SPO 0.5 4 yellow
5 0821 GEM 1 3 yellow
6 0827 GEM 3 3
7 0827 GEM 0 2 yellow
8 0828 GEM 0.5 1(3)
9 0830 GEM 0.5 3
10 0831 GEM 2.5 2
11 0831 GEM -1 3
12 0832 HYD 1 2(3)
13 0835 GEM 3 3
14 0835 HYD 2 3(3)
15 0838 GEM -2 3
16 0841 GEM 1.5 3 yellow
17 0842 SPO 3.5 2
18 0848 SPO 4 4
19 0849 XOR 1.5 2
20 0854 SPO 4 4
21 0856 GEM 3.5 3
22 0858 GEM 0.5 3 green
23 0859 GEM 3.5 2
24 0859 SPO 3 3
25 0901 GEM 4 2
26 0905 SPO 3 3
27 0908 GEM 2.5 2
28 0909 HYD 3 4
29 0913 SPO 4 4
30 0921 GEM 1 2 orange
31 0921 GEM -6 2 blue
32 0923 GEM 2 3
33 0924 GEM 2 3
34 0927 SPO 1.5 2
35 0930 GEM 3 3
36 0932 GEM 1.5 3
37 0945 SPO 4 4
38 0947 XOR 3.5 2
39 0950 GEM -3 3 blue
40 0956 SPO 4 2
41 0957 GEM 1.5 1(3)
42 0959 SPO 2 2
43 1007 SPO 4 5
44 1010 SPO 2 4
45 1012 SPO 1 3(3)
46 1012 GEM 3 3
47 1015 GEM 3 1(3) green
48 1019 SPO 4 4
49 1021 HYD 4.5 4
50 1021 GEM 2 3
51 1027 GEM 2 3
52 1037 GEM -8 3 yellow wake(2)
53 1041 GEM 3 2
54 1042 SPO -1.5 3
55 1047 GEM 5 3
56 1047 GEM 0 2
57 1049 SPO 4.5 5
58 1052 GEM 1 3
59 1052 GEM 2 2
60 1057 GEM 3 2
61 1059 SPO 4 5
62 1101 SPO 3 3
63 1101 SPO 3.5 1
64 1104 SPO 3 3
SPEED (VELOCITY) SCALE:
0 = Stationary
1 = Very Slow
2 = Slow
3 = Medium
4 = Fast
5 = Very Fast
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REMARKS:
(1) Not the most ideal conditions; I just walked outside at 7 UT and it
was mostly clear after being 60-80% cloud-covered. I'm not sure how
useful these observations are, but by golly, it was the Geminids and I
was going to get a few hours in since it was the first clear moonless
morning in over two months!
(2) #52 is the brightest meteor I can recall seeing directly (although
I've seen quite a few flashes behind my back!) It looked like a very
bright roman candle or a magnesium flare, all head and no tail except a
faint wake. It fell from a point in northern Auriga or Camelopardus all
the way to the NW horizon; looked like it had actual spherical size.
(3) These meteors all originated very near their radiant; thus, the
speeds are lower than typical for the showers.
<end of report>