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(meteorobs) Observation June 25/26 2001
On June 25/26, I went to Casselman under clear skies and concentrated
on June Bootids and Sagittarids by facing south-west. The very first
meteor seen was a slow moving 1st magnitude low in the west over 20
degrees, and had my hopes up. The plot showed the radiant alignment
was too much of a miss (even assuming a diffuse radiant), so I called
it a sporadic. The only other JBO candidate was also too badly
aligned to the radiant.
Lots of sporadics were seen... 9 in the first hour alone! The best
meteor was a sporadic from the north apex source at 6:13UT. It was a
blue magn -1 that shot very swiftly high in the south-west, leaving
behind a 2 sec train.
At 6:18UT, a satellite tumbling very quickly 80deg high in the east.
Pierre Martin
Ottawa, Ontario
DATE: June 25/26 2001
BEGIN: 4:25 UT (0:25 EDT) END: 6:30 UT (2:30 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -75.063 West; Lat: 45.269 North Elevation:100m
City & Province: Casselman, Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder
-----------------------------------------------------------------------
OBSERVED SHOWERS: 3-letter code; radiant position
SAG (Sagittarids) 19h00 -20
TOP (Theta Ophiuchids) 17h35 -17
JBO (June Bootids) 15h00 +48
-----------------------------------------------------------------------
OBSERVING PERIODS: 0 = none seen; / = shower not observed
PERIOD(UT) FIELD Teff F LM SPO napx SAG TOP JBO
4:25-5:27 16h54 +20 1.00 1.00 6.26 9 0 1 1 0
5:27-6:30 16h54 +20 1.02 " 6.32 5 2 1 1 0
--------------------------------------------------------------
TOTALS: 2.02 14 2 2 2 0 = 20
--------------------------------------------------------------
The first column (Period UT) refers to observing periods broken down
as close as possible to one hour of true observing, in Universal
Time. The second column (Field) is the area in in the sky where I
centered my field of view. The third column (TEFF) represents
effective observing time (corrected for breaks or any time I did not
spent looking at the sky). One hour = 1.00 teff. The fourth column
(F) is for sky obstructions (clouds, buildings, ect). No obstructions
= 1.00 but any obstructions will make this number slightly higher.
The 5th column (LM) is the average naked eye limitimg magnitude,
determined by triangle star counts. All following columns indicate
the number of meteors for each shower observed.
MAGNITUDE DISTRIBUTIONS:
SHOWER -1 0 +1 +2 +3 +4 +5 AVERAGE
SPO 1 0 2 2 4 5 2 +3.35
SAG 0 0 0 1 0 1 0 +3.0
TOP 0 0 0 0 0 1 1 +4.5
---------------------------------
TOTALS: 1 0 2 3 4 7 3
---------------------------------
Note: Magnitude scale is to determine the brightness of sky objects.
Magnitude -8 is comparable to a quarter moon, magnitude -4 with the
planet Venus, magnitude -1 wi
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