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(meteorobs) NAMN Meteor Report: Jul 12/13 (Hall)
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NAMN VISUAL SUMMARY REPORT
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DATE: 12/13 July 1997 BEGIN: 4.15 UT END: 8.01 UT
OBSERVER: Cathy Hall
LOCATION: Long: 76 10' 35" West; Lat: 45 18' 35" North
City & State: Almonte, Ontario, Canada Elevation: 400 ft.
RECORDING METHOD: tape recorder
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OBSERVED SHOWERS: 3-letter code; radiant position; radiant diameter
SAG 295 -21.5 (19h40m -21.5) diam. 15/10
CAP 291 -14.5 (19h24m -14.5) diam. 8
JPE 342 +15.5 (22h48m +15.5) diam. 5
SDA 327 -19 (21h48m -19) diam. 5
NDA 314 -10 (20h56m -10) diam. 5
PAU 328 -34.5 (21h52m -34.5) diam. 5
PER 9 +50.5 (0h36m +50.5) diam. 5
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OBSERVING PERIODS: 0 = none seen; / = shower not watched.
PERIOD(UT) FIELD Teff F LM
1. 4.15-5.30 21h40m +15 1.07 1.01 5.7
2. 5.30-7.00 22h40m +15 1.08 1.18 5.6
3. 7.00-8.01 23h20m +25 0.94 1.34 5.4
SAG CAP JPE SDA NDA PAU PER SPO
1. 0 1 0 0 1 0 1 8
2. 0 0 1 0 1 0 1 13
3. 1 0 0 0 0 0 1 4
TOT: 1 1 1 0 2 0 3 25
TEFF: 3.09 hrs.
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MAGNITUDE DISTRIBUTIONS:
SHOWER +1 +2 +3 +4 +5 TOTAL MEAN
SAG 0 1 0 0 0 1 2.00
CAP 0 .5 .5 0 0 1 2.50
JPE 0 0 0 .5 .5 1 4.50
SDA 0 0 0 0 0 0 n/a
NDA 0 1 0 .5 .5 2 3.25
PAU 0 0 0 0 0 0 n/a
PER 1 .5 1.5 0 0 3 2.17
SPO 2 4.5 1 9.5 8 25 3.68
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SKY OBSCURED (UT):
5.15-5.30 5 %
5.30-5.56 5 %
5.56-6.00 10 %
6.00-6.34 20 %
6.34-6.37 25 %
6.37-6.50 15 %
6.50-6.56 25 %
6.56-7.05 30 %
7.05-8.01 25 %
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DEAD TIME: 28.75 min.
BREAKS: 12 min. (6.22-6.34)
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LIMITING MAGNITUDE:
STAR STAR
TIME AREA COUNT LM
4.15 14 12 5.7
5.00 14 12 5.7
5.30 14 12 5.7
6.00 14 12 5.7
6.30 14 11 5.5
7.00 14 10 5.4
7.30 14 12 5.7
8.00 14 8 5.2
MEAN LIMITING MAGNITUDE: 5.6
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METEOR DATA:
# (UT) MAG VEL CLR SHR TRAIN MAP/ACC
1 4.26 4.5 3 W SPO
2 4.27 1.5 3 W SPO plot#1 6/2
3 4.31 4.5 3 W SPO
4 4.34 2.0 3 W NDA plot#2 6/3
5 4.42 2.5 4 W PER
6 4.56 1.5 3 W SPO 1sec plot#3 1/2
7 5.03 4.5 3 W SPO plot#4 6/2
8 5.13 2.5 2 W CAP plot#5 6/1
9 5.20 5.0 3 W SPO
10 5.27 5.0 3 W SPO
11 5.27 4.5 3 W SPO
12 5.31 1.0 3 W SPO
13 5.34 5.0 3 W SPO
14 5.36 3.5 3 W SPO
15 5.37 2.0 3 W SPO 1sec plot#6 6/1
16 5.38 4.0 4 W SPO
17 5.43 4.0 3 W SPO plot#7 6/2
18 5.53 1.0 4 W PER 1sec plot#8 6/2
19 5.56 4.5 3 W SPO
20 5.58 4.5 3 W SPO plot#9 6/2
21 6.01 4.0 3 W SPO plot#10 6/3
22 6.19 4.5 3 W NDA
23 6.39 4.5 3 W SPO
24 6.42 2.0 3 W SPO 1sec plot#11 6/2
25 6.49 5.0 3 W SPO
26 6.52 4.0 3 W SPO
27 6.54 4.5 3 W JPE
28 7.03 2.0 3 W SPO
29 7.19 4.5 3 W SPO
30 7.20 4.0 4 W SPO plot#12 6/3
31 7.32 2.5 3 W SPO plot#13 6/3
32 7.39 3.0 4 W PER
33 8.01 2.0 2 W SAG
VELOCITY (VEL.) SCALE:
0 = Stationary
1 = Very Slow
2 = Slow
3 = Medium
4 = Fast
5 = Very Fast
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REMARKS:
Temperature: 18C (65F), mosquitoes
Recording time/meteor: 5 sec.
Plotting time/meteor: 2 min.
Observed shower positions extrapolated/interpolated from WGN 25-1
Notes on Meteors:
Plots #3 and #11 are Perseid-type meteors, but originating below Perseus, or
Auriga possibly.
<END OF REPORT>