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A 6.9 second occultation was recorded by Gordon Hudson, using Video OSD technique.
An obseravtion by Brian was initially deemed a possible positive event but when it did not fit with Gordon's data nor the ISAM model we decided to treat it as a miss. 6 other observers were registered in OW but were clouded out or had other problems that prevented observation.
View the TT14 prediction.
Observers:
1 B Loader,Darfield
2 G Hudson,Porirua, New Zealand
3(P) Prediction, Camilla TT14 1 May
4(P) Prediction for Camilla(S/2001) S/2001 is a Satellite of Camilla - prediction made with Occult4
Others registered but no result:
Chris Chad AU - late starting
John Drummond, NZ Clouded out
Dave Gault AU - late starting
John Talbot - On wrong field
Peter Graham NZ -
Bill Allen NZ -
Discussion:
The ellipse above is plotted at the best fit axis ratio as determined light curve data. It also shows the predcited path of the satellite with a small event at lower right. While this is close to Brian's path the position of his "possible" is a long way from the predcited. After discussions we decided to treat Brian's data as a miss
This is the "Most probable" solution to the data. The ellipse above is plotted at the best fit axis ratio as determined by matching the ISAM model. With only one chord it is not possible to determine whether Gordon was north or south of the central line of the event. However if we treat Brian's line as a miss then it constrains the psth to the north and close to the prediction The ISAM 3D model has been overlaid and the ellipse adjusted to be a good fit - Note this is the reverse of what we normally do and does not imply an actual shape.
The figure below shows the Gordon's light curve of the occultation.
The figure below shows the Brian's light curve of the "possible" occultation.
It is a pity that more of us did not manage to observe as this had potential to get 5 or 6 chords.
Observational Data:
Observation details for MP ( 107 ) Camilla
By Star UCAC4 529-031891
On 2013-05-07 at 07:52:39.0
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Observer B. Loader
Location Darfield
Longitude +172:06
Latitude -43:28
Altitude 210 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 20 cm
Seeing Strong flickering Clear
Camera Type WAT120N+ PAL/CCIR
Camera Delay 0.35
Timing GPS - time inserted Video with frame analysis
Disappearance 07:52:28.44
Reappearance 07:52:30.32
Comments: A *possible* event only. Needs confirmation by other observations.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.7
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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 0.11
Timing GPS - time inserted Video with frame analysis
Disappearance 07:52:43.04
Reappearance 07:52:50.01
Comments: Severe problems with time insertion -
Disapears randomly