Three chords were recorded , using video OSD technique.
One clearly observed miss was recorded for this event.
View the updated prediction.
Observers: 1 D Lowe,Brissbane, Queensland, AU 2 J Bradshaw,Samford Valley, Qld, AU 3 J Broughton,Gunalda, QLD, AU 4(M) J Broughton,Bundaberg, QLD, AU 5(P) Prediction, 12 June
The ellipse above is plotted at the best fit axis ratio as determined by Occult. With 3 chords we can be confident of the path of Hygiea and that it was south of the predicted line. The two ISAM 3D models have been overlaid on the measured ellipse and both show good fit making it difficult to determine which of the two 3D sdolutions is the better fit despite having 3 good chords.
The figure below shows the Tangra light curve of Dennis Lowe's occultation.
The figure below shows the Limovie/Tangra light curve of Jonathan Bradshaw's occultation.
The figure below shows the Limovie light curve of John Broughton's occultation.
Observation details for MP ( 10 ) Hygiea By Star TYC 1219-00304-1 On 2013-08-10 at 17:09:00.0 _______________________________ Observer Dennis Lowe Location Brisbane, Queensland, Australia Longitude +153:12 Latitude -27:43 Altitude 39 m Datum WGS84 Telescope Refractor Aperture 10 cm Seeing Slight flickering Broken cloud Camera Type WAT120N+ PAL/CCIR Camera Delay -0.19 Timing GPS - time inserted Video with frame analysis Disappearance 17:09:36.96 Reappearance 17:10:15.00 Comments: The light curve shows the star emerging from cloud a few seconds before the occultation. _______________________________ 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 Thin cloud < 2 Camera Type G-Star PAL/CCIR Camera Delay 0.04 Timing GPS - time inserted Video with frame analysis Disappearance 17:09:35.67 Reappearance 17:10:12.67 Comments: Nice result from a long anticipated event. High cloud dimmed the star, but was very even and didin't marr the event _______________________________ Observer John Broughton Location Gunalda, QLD, AU Longitude +152:37 Latitude -25:58 Altitude 112 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 9 cm Seeing Steady Clear Camera Type LN-300-11673 PAL/CCIR Camera Delay -0.8 Timing GPS - other linking Video with frame analysis Disappearance 17:09:42.23 Reappearance 17:10:06.87 Comments: _______________________________ Observer John Broughton Location Bundaberg, QLD, AU Longitude +152:12 Latitude -25:02 Altitude 78 m Datum WGS84 Telescope Newtonian Aperture 32 cm Seeing Steady Clear Camera Type WAT120N+ PAL/CCIR Camera Delay 0.05 Timing GPS - time inserted Video with frame analysis Missed Comments: