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A 4.2 second occultation was recorded by John Drummond, using Video OSD technique.
View the personal prediction.
Observers: 1 J Broughton,Reedy Creek, QLD, AU 2(P) Prediction, Personal
Discussion:
The circle above is plotted at the expected 121 km diameter of Sapientia. With only one chord it is not possible to determine whether John was north or south of the central line of the event.
The figure below shows the Tangra light curve of the occultation.
Observational Data:
Observation details for MP ( 275 ) Sapientia By Star UCAC2 38414515 On 2011-12-31 at 17:01:19.0 _______________________________ Observer John Broughton Location Reedy Creek, QLD, AU Longitude +153:23 Latitude -28:06 Altitude 66 m Datum WGS84 Telescope Newtonian Aperture 32 cm Seeing Slight flickering Clear Camera Type WAT120N PAL/CCIR Camera Delay 0.17 Timing GPS - time inserted Video with frame analysis Disappearance 17:01:16.83 Reappearance 17:01:20.99 Comments: