A 5.6 second occultation was recorded by Steve Kerr, using video OSD technique.

View the updated prediction.

Observers:
  1    S Kerr,Glenlee, Queensland, AU
  2(P) Prediction TT 24 Sep


    

Discussion:

The circle above is plotted at the expected 127 km diameter of Boliviana. With only one chord it is not possible to determine whether Steve was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the close to expected chord of about 120 km would suggest that the chord might lie close to the central portion of the asteroid.

The figure below shows the lightcurve of the occultation as analysed by Limovie software.

Observational Data:

Observation details for MP (712) Boliviana
By Star              UCAC2 27334118
On 2008-10-04  at 12:00:06.0
_______________________________

Observer   Stephen Kerr
Location   Glenlee, Queensland, Australia
Longitude  +150:30:0.8
Latitude   -23:16:9.6
Altitude   50 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Slight flickering Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  12:00:06.32
Reappearance   12:00:11.92
Comments: Video camera integrating with a exposure period of 160ms. Limovie analysis from 11:59:50 to 12:00:20 UTC.