(meteorobs) Observation October 4/5 2004

[Pierre Martin]

I went to the Stetsons Flyers field site (east of Ottawa) Monday 
evening, October 4 2004 to start hunting in case of any early 
Giacobinids.

To avoid the severe light pollution dome from Ottawa in the west, I 
faced the northern sky and half way up.  This allowed for a pretty 
reasonable mag 6.1 sky, with decently transparent conditions.  It was a 
cool night down to the freezing point (0C) with a bit of frost.

In a bit over an hour teff, I recorded 6 sporadics and 1 possible 
Giacobinid.

The Giacobinid was caught and plotted at 10:04pm EDT.  It flew into 
Andromeda.  It gradually swelled in brightness to magnitude +1, then 
disappeared.  It was rather brief, and no train or wake.  By reviewing 
the plot, it aligns perfectly with the radiant.

Pierre Martin
Ottawa, Ontario



DATE: October 4/5 2004
BEGIN: 0200 UT (2200 EDT)  END: 0335 UT (2335 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -75.063 West; Lat: 45.269 North  Elevation: 400 ft
City & Province: Boundary road, Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder, plotting
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OBSERVED SHOWERS:_____________________________________radiant position
		GIA (Giacobinids)______________________________17:28 +54
		ANT (antihelions or Taurids)___________________01:40 +10
		ORI (Orionids)_________________________________05:28 +13
		NPX (sporadics from north apex)________________06:40 +38
		SPX (sporadics from south apex)________________06:40 +08
		SPO (random sporadics)
-----------------------------------------------------------------------

OBSERVING PERIODS: 0 = none seen;  / = shower not observed

PERIOD(UT)_FIELD____Teff__LM____GIA_ANT_ORI_NPX_SPX_SPO

0200-0335__2115+77__1.18__6.13___1___0___/___/___/___6  =  7

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_____0___0___2___3___1_____+3.83
GIA_____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

------------------------

Dead time: 24.33 min (including 2 min for plots)

Breaks (UT): 2:33 (20sec), 3:03-3:25

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