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Two chords were recorded by John Broughton, using video OSD technique.
One clearly observed miss was recorded for this event.
View the updated prediction.
Observers:
1(M) J Bradshaw,Sanford Valley, Qld, AU
2 J Broughton,Eagleby, QLD, AU
3 J Broughton,Reedy Creek, QLD, AU
4(P) Prediction, 6 Aug
Discussion:
The ellipse above is plotted at the best fit axis ratio as determined by Occult. This give an axis ratio of 1.22 compared to the lightcurve estimate of 1.13. The resultant area is about 88% of the predicted circle of 72 km. With 2 chords we can be confident of the path of Phaeo and that it was south of the predicted line.
The figure below shows the Tangra light curve of the occultation from Eagleby.
The figure below shows the Tangra light curve of the occultation from Reedy Creek.
Observational Data:
Observation details for MP ( 322 ) Phaeo
By Star UCAC2 39470326
On 2012-10-04 at 16:41:59.0
_______________________________
Observer Jonathan Bradshaw
Location Samford Valley, Qld, Australia
Longitude +152:50
Latitude -27:22
Altitude 80 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 36 cm
Seeing Steady Clear
Camera Type G-Star PAL/CCIR
Camera Delay 0.05
Timing GPS - time inserted Video with frame analysis
Missed
Comments: Report prepopulated by IOTA Reporting Add-in for OW ver.1.6
_______________________________
Observer John Broughton
Location Eagleby, QLD, AU
Longitude +153:12
Latitude -27:43
Altitude 8 m
Datum WGS84
Telescope Newtonian
Aperture 32 cm
Seeing Steady Clear
Camera Type WAT120N PAL/CCIR
Camera Delay 0.09
Timing GPS - other linking Video with frame analysis
Disappearance 16:41:48.30
Reappearance 16:41:51.82
Comments:
_______________________________
Observer John Broughton
Location Reedy Creek, QLD, AU
Longitude +153:23
Latitude -28:06
Altitude 66 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 25 cm
Seeing Steady Clear
Camera Type WAT120N PAL/CCIR
Camera Delay 0.09
Timing GPS - time inserted Video with frame analysis
Disappearance 16:41:50.58
Reappearance 16:41:54.58
Comments: