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A 23.68 second occultation was recorded by John Broughton, using Video OSD technique.
Two clearly observed misses were recorded for this event.
View the TT14 prediction.
Observers:
1 J Broughton,Pottsville, NSW, AU
2(M) J Broughton,Reedy Creek, QLD, AU
3(M) J Bradshaw,Samford Valley,QLD,AU
4(P) Prediction TT14 25 Feb
Discussion:
The ellipse above is plotted at the maximum axis ratio as determined by lightcurve inversion data and with the same area as a 127km circle as expected by latest predictions. With one chord and constraining Misses we can be confident that John was west of the central line of the event. Unfortunately there are not yet any Damit/ISAM/Miriade shape models that might give a better view of this object.
The figure below shows the Tangra light curve of the occultation.
Observational Data:
Observation details for MP ( 78 ) Diana
By Star UCAC2 18205585
On 2012-03-29 at 13:02:48.0
_______________________________
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 0.33
Timing GPS - time inserted Video with frame analysis
Missed
Comments:
_______________________________
Observer John Broughton
Location Pottsville, NSW, AU
Longitude +153:33
Latitude -28:23
Altitude 7 m
Datum WGS84
Telescope Newtonian
Aperture 32 cm
Seeing Steady Clear
Camera Type WAT120N PAL/CCIR
Camera Delay 0.33
Timing GPS - other linking Video with frame analysis
Disappearance 13:02:47.72
Reappearance 13:03:11.40
Comments:
_______________________________
Observer Jonathan Bradshaw
Location Samford Valley,QLD,AU
Longitude +152:50
Latitude -27:22
Altitude 80 m
Datum WGS84
Telescope Newtonian
Aperture 36 cm
Seeing Steady Clear
Camera Type G-Star PAL/CCIR
Camera Delay 0.02
Timing GPS - time inserted Video with frame analysis
Missed
Comments: