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
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.
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 v184.108.40.206. 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