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(meteorobs) Meteor Observations Aug. 12/13 STOWE
Got a chance to see whether dark sky and low radiant elevation or
moonlight (in an otherwise transparent sky) and a slightly higher radiant
elevation after midnight produced a better raw hourly rate. In this case,
it may have been a wash!
Observations 1998 Aug. 12/13 Wes Stone (STOWE)
White River Canyon, OR 45N 18' 121W 39'
Field Centered at 20h,+40d all night
LM areas used: 13 and 15
F=0 for entire night
----------------
UT # #
Interval Teff LM PER Non-PER*
0500-0608 1.05 6.7 39 19
0609-0800 1.84 6.3 68 20
------------------------------------------------------
Totals 2.89 107 39 = 146
*Non-PER includes possible minor shower members as noted in Meteor List
below.
------------------------
Magnitude Distributions
0500-0608
PER (N=39, M=2.40)
mag class -1 0 1 2 3 4 5
#meteors 1 1.5 4 15.5 10.5 4.5 2
Non-PER (N=19, M=3.84)
mag class 2 3 4 5
#meteors 1 6.5 6 5.5
0609-0800
PER (N=68, M=2.15)
mag class -5 -4 -3 -2 -1 0 1 2 3 4 5 6
#meteors 1 0 1 1 2 6.5 11 12.5 15.5 12.5 4.5 0.5
Non-PER (N=20, M=2.62)
mag class 0 1 2 3 4 5
#meteors 2.5 2 2 9 3 1.5
-------------------------------
METEOR LIST
NO. STR. MAG SPD NOTES
---------Begin Interval 1, 0500 UT---------
1 P 3 4
2 P 2 4
3 P 4 3
4 P 3.5 4
5 P 2.5 4
6 P 2 4 ~3s
7 P 3 4
8 NP 3 2
9 NP 5 4
10 P 1 3
11 P 2.5 4
12 P 2 3
13 P 1.5 4
14 P 2 4
15 P 1.5 3
16 NP 5 4
17 NP 3 4 Aqr?
18 P 1.5 3 ~3s
19 P 2.5 4
20 P 3.5 4
21 P 4 3
22 NP 2.5 3
23 NP 4 5
24 P 3 3
25 P 5 4
26 P 3 4
27 P 5 4
28 P 1.5 4
29 P 3.5 4
30 P -1 3
31 NP 3 2
32 NP 4 2
33 P 2 3
34 NP 4 5
35 P 2 4
36 P 3 4
37 P 3 3
38 NP 5 2
39 P 0.5 3
40 P 2 4
41 NP 4 4
42 NP 5 3
43 NP 3 4
44 P 2 4
45 P 2.5 4
46 P 2 3
47 NP 4.5 3
48 NP 3.5 4 Aqr?
49 P 3 3
50 NP 2.5 3
51 NP 4 4 Aqr?
52 P 2 4
53 P 2 4
54 P 4 5
55 NP 3 2
56 NP 5 5
57 P 1.5 4
58 P 0 3
---------End Interval 1, 0608 UT---------
---------Begin Interval 2, 0609 UT---------
59 P 4 4
60 NP 1.5 2
61 P 0.5 4
62 NP 3.5 4
63 P 5.5 5
64 P 4 3
65 P 4 3 Colinear and immed. following 64
66 P 4.5 4
67 NP 3 3
68 NP 3 5
69 P -1 3
70 P 4 4
71 P 1 4
72 P 1.5 4
73 P 0 4
74 P 1 4
75 P 2 4
76 NP 4.5 3
77 P -2 4
78 NP 5 2 KCG?
79 P 2 4
80 P -3 4
81 P 4.5 4
82 P 4 3
83 NP 0.5 2 KCG?
84 P 4 5
85 P 0.5 4
86 P 4 4
87 P 5 4
88 NP 3 2 KCG?
89 P 1.5 4
90 P 1.5 4
91 NP 3 4
92 NP 3 4
93 P 3.5 4
94 P 0.5 4
95 NP 2.5 2 KCG?
96 P 3.5 4
97 P 3 4
98 P 2.5 3
99 P 0 4
100 P 3 3
101 P 0 5
102 P 3 4
103 P 2 5
104 NP 2 4
105 P 1 4 red, as were most bright P
106 P 0 4
107 P -5 4 0711 UT, blue term burst, ~15s
108 P 2.5 4
109 P 1.5 4
110 NP 3 3
111 NP 0 2 CAP?, red
112 P 1 4
113 P 2.5 4
114 P 4 4
115 NP 3 2
116 P 0.5 3
117 P 3 4
118 P 1.5 4
119 P 1 5
120 P 3.5 3
121 P 2.5 3
122 P 2 4
123 P 3 4
124 P 5 4
125 NP 1 4
126 P 3 4
127 P 3.5 4
128 P 3 4
129 P 0.5 4
130 P 2 2 near radiant
131 P 3 4
132 NP 2.5 4
133 P 1 4
134 NP 0 2 red
135 P 3.5 5
136 NP 4 5
137 P 2 4
138 P 2 4
139 P 5 4
140 NP 3.5 3
141 P 3 4
142 P 2.5 4
143 P 4 4
144 P 2.5 4
145 P 3 4
146 P -1 4
---------End Interval 2, 0800 UT---------
NOTABLE METEORS
17,48,51 may have been from one of the Aquarid streams
64 and 65 were almost simultaneous, along same path
78,83,88,95 may have been Kappa Cygnids based on speed and gen. alignment.
105: Most Perseids brighter than -1 had a reddish (Betelgeuse-like) tint.
107: 0711 UT. -5 at its bright, strikingly blue terminal burst and a
15-second train that was dispersed and contorted by winds. Would have
been visible longer except for moonlight and location in the Milky
Way.
111 May have been an Alpha Capricornid based on speed and alignment.
-----End Message-----
--
Wes Stone <wstone@lclarkdot edu> Lewis and Clark College, Portland, OR
SKYTOUR Amateur Astronomy Hypertext:
http://www.lclarkdot edu/~wstone/skytour/skytour.html