A 8.5 second occultation was recorded by Dave Herald, using video OSD technique.

One clearly observed misse was recorded for this event.

View the updated prediction.

Observers:
  1(M) H Pavlov,St Clair,NSW,AU
  2    D Herald,Kambah, ACT,AU
  3(P) Prediction 18 March


    

Discussion:

The circle above is plotted at the expected 60 km diameter of Bianca. With only one chord it is not possible to determine whether Dave was north or south of the central line of the event. However, The approximately 56 km chord is close to the expected maximum chord of about 60km and this 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 (218) Bianca
By Star              UCA 2U31540196
On 2010-05-05  at 14:18:02.0

_______________________________

Observer   Hristo Pavlov
Location   St Clair,NSW,AU
Longitude  +150:46
Latitude   -33:48
Altitude   68 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.4

_______________________________

Observer   Dave Herald
Location   Kambah, ACT,AU
Longitude  +149:03
Latitude   -35:23
Altitude   582 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   35 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  14:17:35.10
Reappearance   14:17:43.58
Comments: 4-frame integration  Report prepopulated by IOTA Reporting Add-in for OW ver.1.4