A 1.24 second occultation was recorded by Hristo Pavlov, using video OSD technique.

View the updated prediction.

Observers:
  1    H Pavlov,Marsfield, NSW,AU
  2(P) Prediction  28 Nov 09

    

Discussion:

The circle above is plotted at the expected 19 km diameter of Henrika. With only one chord it is not possible to determine whether Hristo 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 20 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 (826) Henrika
By Star       TYC 6120-00450-1
On 2010-01-19  at 13:26:50.0

_______________________________

Observer   Hristo Pavlov
Location   Marsfield, NSW,AU
Longitude  +151:06:16.8
Latitude   -33:46:11.5
Altitude   100 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Strong flickering Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:26:55.77
Reappearance   13:26:57.01
Comments: The star was very low - only 8 deg above the horizon
http://www.hristopavlov.net/Observations/Positives/2010-01-19%20Henrika/Event.html
Report prepopulated by IOTA Reporting Add-in for OW ver.1.4