A 6.16 second occultation was recorded by Bill Hanna, using Video OSD technique.
No clearly observed misses were recorded for this event.
View the updated prediction.
Observers: 1 W Hanna,Alice Springs, Australia 2(P) Prediction, 01 April
The circle above is plotted at the expected 79 km diameter of Hormuthia.
The predicted time of the event was about 100 seconds (about 6 sigma) from the observation
so the gap on the predicted line is off the plot.
With only one chord it is not possible to determine whether Bill was north
or south of the central line of the event.
This illustrates why observers should try to record or observe for significantly longer in time, and wider in space, than the 1 sigma error given in the predictions. You just never know when you might get lucky. Also remember that any moonlets of asteroids are usually found at around 10 to 15 times the diameter of the main object.
The figure below shows the Tangra light curve of the occultation.
Observation details for MP ( 805 ) Hormuthia By Star UCAC2 29556531 On 2014-08-28 at 11:04:58.0 _______________________________ Observer William Hanna Location Alice Springs, Australia Longitude +133:53 Latitude -23:42 Altitude 584 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 36 cm Seeing Steady Clear Camera Type Grasshopper Express with ADVS ADVS Camera Delay 0 Timing GPS - time inserted Video with frame analysis Disappearance 11:06:06.65 Reappearance 11:06:12.81 Comments: Gamma 1.0, gain 29dB Calm, 19C.