A 5.5 second occultation was recorded by Dave Gault, using video OSD technique.

View the TT14 prediction.

Observers:
  1    D Gault,Hawkesbury Heights,NSW,AU
  2(P) Prediction, TT14 25 March



    

Discussion:

The circle above is plotted at the expected 73 km diameter of Alekto. The ellipse above is plotted at the maximum axis ratio as determined by lightcurve inversion data. With only one chord it is not possible to determine whether Dave 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 (465) Alekto
By Star              UCA 2U20467652
On 2011-04-09  at 15:56:06.0

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Slight flickering Clear
Camera Type
Camera Delay
Timing     GPS - time inserted Visual, PE applied
Disappearance  15:56:02.80
Reappearance   15:56:08.30
Comments: Light curve and .csv file included with this report.
I'm not 100% certain that the event occurred as the S/N is very low.