A 5.06 second occultation was recorded by Graeme McKay, using Video OSD technique.

Two clearly observed misses were recorded for this event.

View the updated prediction.

Observers:
  1(M) J Talbot, Waikanae Beach, NZ         
  2() G Hudson,Porirua, New Zealand        
  3    G McKay,Blenheim, New Zealand        
  4(M) B Loader,Darfield,NZ
  5(P) Prediction,27 August                 

        

Discussion:

Both John and Gordon had problems: John managed a prepoint and had the right field but set his intgration too low, and had to resort to gamma correction in Limovie to measure the star. Gordon appears to have been on the wrong field despite careful alignment with 2 other stars. The ellipse above is plotted at a reasonable fit axis ratio constrained by the DAMIT shape. With only 1 chord the scale may or may not be correct and should not be used to calibrate the DAMIT model for size. With one longer than expected chord and a miss we can be sure that the path slightly north of the predicted line of the event. Assuming the updated prediction was approximately correct, the longer than expected chord of about 80km would suggest that the chord might lie close to the central portion of the asteroid.

The figure below shows the Tangra light curve of Graeme's occultation.

Observational Data:

Observation details for MP ( 441 ) Bathilde
By Star              UCAC2 25623276
On 2014-09-30  at 09:44:22.0

_______________________________

Observer   Graeme McKay
Location   Blenheim, New Zealand
Longitude  +173:57
Latitude   -41:32
Altitude   18 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   28 cm
Seeing     Slight flickering Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.11
Timing     GPS - time inserted Video with frame analysis
Disappearance  09:44:18.51
Reappearance   09:44:24.11
Comments: Duration 5.60 sec observed vs predicted max 4.1 sec
  Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   John Talbot
Location   Waikanae Beach, NZ
Longitude  +175:01
Latitude   -40:51
Altitude   5 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Slight flickering Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.35
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Star very faint and no dip that could not be noise.  
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   B. Loader
Location   Darfield
Longitude  +172:06
Latitude   -43:28
Altitude   210 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Slight flickering Broken cloud
Camera Type  WAT910BD       AAV-PAL
Camera Delay -0.04
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Thin "coastal" cloud just beginning to move in, patchy effect.  
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   G Hudson
Location   Porirua, New Zealand
Longitude  +174:50
Latitude   -41:06
Altitude   52 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.67
Timing     GPS - time inserted Video with frame analysis

Uncertain
Comments: May have been on wrong field.
We have tried to identify the field but have not been able to.
It does not match the C2A view.