A 12.5 second occultation was recorded by Dave Herald, using video OSD technique.
One clearly observed misses were recorded for this event.
View the TT14 prediction.
Observers: 1(M) D Hooper,Melbourne, Australia 2 D Herald,Murrumbateman, NSW, AU 3(P) Prediction TT14 Feb 26
The circle above is plotted at the expected 89 km diameter of Edna. With only one chord it is not possible to determine whether Dave was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the plot suggests that that the chord might lie within 25km of the central portion of the asteroid.
The figure below shows the AOTA analysis of the Tangra light curve of the occultation.
Observation details for MP ( 445 ) Edna By Star UCAC4 495-048712 On 2015-03-13 at 11:26:55.0 _______________________________ Observer Dean Hooper Location Melbourne,VIC, Australia Longitude +145:00 Latitude -37:56 Altitude 28 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 20 cm Seeing Steady Thin cloud < 2 Camera Type WAT910HX PAL/CCIR Camera Delay -0.33 Timing GPS - time inserted Video with frame analysis Missed Comments: Light curve data generated and inspected using Tangra v3.3.8 _______________________________ 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 -0.05 Timing GPS - time inserted Video with frame analysis Disappearance 11:25:36.86 Reappearance 11:25:49.34 Comments: Lightcurve from 00:00:00 to 11:27:29 by Tangra v3.3.8 using AperturePhotometry/AverageBackground. Analysis by AOTA v188.8.131.52. Report prepopulated by IOTA Reporting Add-in for OW ver.1.8