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A 10.1 second occultation was recorded by Dave Herald, using video OSD technique.
One clearly observed miss was recorded for this event.
View the TT14 prediction.
Observers:
1 D Herald,Murrumbateman, NSW, AU
2(M) S Kerr,Rockhampton,QLD,AU
3(P) TT14 Prediction,28 June
Discussion:
The ellipse above is plotted so that the major axis fits the chord of 91 km and the area is the same as the predicted circle of 83 km. T With only one chord it is not possible to determine whether Dave was East or West of the central line of the event. However, assuming the updated prediction was approximately correct the longer than expected chord of about 91km 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 analysed in AOTA.
Observational Data:
Observation details for MP ( 61 ) Danae
By Star UCAC4 230-109320
On 2014-07-28 at 09:38:02.0
_______________________________
Observer Dave Herald
Location Murrumbateman, NSW, AU
Longitude +148:59
Latitude -34:57
Altitude 594 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 40 cm
Seeing Steady Clear
Camera Type WAT910BD PAL/CCIR
Camera Delay -0.04
Timing GPS - time inserted Video with frame analysis
Disappearance 09:37:21.87
Reappearance 09:37:31.99
Comments: 35 secs early, and a little longer than expected
Lightcurve from 09:36:31 to 09:38:30 by Tangra v3.1.9
using AperturePhotometry/BackgroundMedian. Analysis by AOTA v4.1.1.4.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8
_______________________________
Observer S. Kerr
Location Rockhampton
Longitude +150:30
Latitude -23:16
Altitude 50 m
Datum WGS84
Telescope SCT including Cass and Mak
Aperture 30 cm
Seeing Steady Clear
Camera Type WAT120N+ PAL/CCIR
Camera Delay -0.07
Timing GPS - time inserted Video with frame analysis
Missed
Comments: Report prepopulated by IOTA Reporting Add-in for OW ver.1.8