A 23.04 second occultation was recorded by Dave Herald, using video OSD technique.

View the updated prediction.

Observers:
  1    D Herald,Murrumbateman, NSW,AU
  2(P) Prediction 27 Jan


    

Discussion: The ellipse above is plotted at the same area as the expected circle of 95 km but fitting the major axis the observed time. This give an axis ratio of about 2.0 compared to lightcurve data estimate of 1.29. With only one chord it is not possible to determine whether Dave was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the longer than expected chord of about 95 km would suggest that the chord might lie close to the central portion of the asteroid.

The figure below shows the Tangra light curve of the occultation.

Observational Data:

Observation details for MP (554) Peraga
By Star              TYC 1877-01522-1
On 2011-02-25  at 09:56:48.0

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   35 cm
Seeing     Steady Clear
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis
Disappearance  09:56:32.22
Reappearance   09:56:55.26
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.5