(meteorobs) Observation September 9/10 2005
Pierre Martin
dob14.5 at sympatico.ca
Thu Sep 29 00:51:47 EDT 2005
Here's a quick one-hour morning meteor session I did on September 10.
Activity was quite normal for the sky conditions I had at this site. A
total of 10 meteors, with only very weak rates from the Delta Aurigids
and antihelions.
No signs of any meteor activity from Triangulum and Taurus.
The highlight was at 4:38 EDT with a slow and very persistent sporadic.
Even though it never got brighter than mag +3, it somehow managed to
display a vivid orange color. It was nearly an earthgrazer with a path
length of 30 degrees. It made for quite a memorable sight. I don't
usually see color in a meteor of this brightness.
Clear skies,
Pierre Martin
Ottawa, Ontario
DATE: September 9/10 2005
BEGIN: 0825 UT (0425 EDT) END: 0935 UT (0535 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -75.063 West; Lat: 45.269 North Elevation: 300 ft
City & Province: Boundary road, Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder, plotting & cord align
-----------------------------------------------------------------------
OBSERVED SHOWERS:_____________________________________radiant position
KAQ (Kappa Aquarids)___________________________22:08 -08
ANT (anthelions)_______________________________00:12 +02 DAU (Delta
Aurigids)___________________________04:04 +47
SPO (random sporadics)
-----------------------------------------------------------------------
OBSERVING PERIODS: 0 = none seen; / = shower not observed
PERIOD(UT)_FIELD____Teff__LM_____SPO_KAQ_ANT_DAU
0825-0935__0555+31__0.82__6.04____8___0___1___1 = 10
*Note: SIA/ANT activity combined together
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). The next column (LM) is the average naked eye limiting
magnitude, determined by triangle star counts. All following columns
indicate the number of meteors for each shower observed.
------------------------
MAGNITUDE DISTRIBUTIONS:
SHOWER
______+1__+2__+3__+4__+5_____AVE
SPO____1___0___4___2___1_____+3.25
ANT____0___0___1___0___0_____+3.00
DAU____1___0___0___0___0_____+1.00
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 with the brightest star Sirius, magnitude +2
to +3 with most average naked eye stars and magnitude +6 to +7 are the
faintest stars the naked eye can see under typical dark conditions. A
meteor of at least magnitude -3 is considered a fireball. The above
table contains the magnitudes from all observed meteors, and the
average (last column) for showers.
------------------------
SKY OBSCURED (FOV): None
F = 1.00
------------------------
Dead time: 11 min (break)
Breaks (UT): 8:56-9:07
-------------------------
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