Three clearly observed misses were recorded for this event.

View the TT14 prediction.

Observers:
  1(M) J Broughton,Reedy Creek, QLD, AU
  2(M) J Bradshaw,ord Valley, Qld, Australia
  3(M) D Gault,Hawkesbury Heights, NSW,AU
  4(P) Prediction, TT14  7 Sept

        

Discussion:

The circle above is plotted at the expected 103 km diameter of Corduba. With no positive chords we cannot say where the actual path was, so the circle has been plotted on the predicted path which was almost the same as John Broughton's position.

The figure below shows the Tangra light curve of the event as recorded by Dave Gault.

There is an interesting dip between frames 790 and 810 that was thought may be a possible event. This does not quite meet the criteia of a 3 sample flat bottom that we apply to separate noise from signal. And if we plot the magnitude changes of the Target relative to the Reference we see that even when we plot each integrated (x32) sample period as a single point that this is much more likely to be noise. We also notice that the magnitude dip from the mean is about 0.5 compared to the expected 1.0

Observational Data:

Observation details for MP ( 365 ) Corduba
By Star              UCAC4 419-137980
On 2012-09-11  at 12:52:43.0

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Steady Clear
Camera Type  WAT120N        PAL/CCIR
Camera Delay 0.19
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:

_______________________________

Observer   Jonathan Bradshaw
Location   Samford Valley, Qld, Australia
Longitude  +152:50
Latitude   -27:22
Altitude   80 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   36 cm
Seeing     Steady Clear
Camera Type
Camera Delay 0
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Clearly observed and in good circumstances - Nothing to back up Dave
on my side I'm afraid.  Report prepopulated by IOTA Reporting Add-in for OW ver.1.6

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights, NSW,AU
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Strong flickering Thin cloud < 2
Camera Type  WAT120N        PAL/CCIR
Camera Delay 0.67
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Light Curve attached