A 1.48 second occultation was recorded by Brian Loader, using video OSD technique.
View the personal prediction.
Observers: 1 B Loader,Darfield,NZ 2(P) Prediction, Pesonal 27 May
The circle above is plotted at the expected 64 km diameter of Tyche. With only one chord it is not possible to determine whether Brian was north or south of the central line of the event. There are two possible DAMIT 3D models for Tyche shown below.
With only one chord it is not possible to decide which is the more likely orientation. Should Tyche show become a candidate for occultation again we should try to make a effort to get at least 3 well spaced chords.
The figure below shows the Tangra light curve of the occultation.
Observation details for MP ( 258 ) Tyche By Star TYC 0253-00597-1 On 2012-06-25 at 05:59:00.0 _______________________________ Observer B. Loader Location Darfield,NZ Longitude +172:06 Latitude -43:28 Altitude 210 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 25 cm Seeing Slight flickering Clear Camera Type WAT120N PAL/CCIR Camera Delay 0.09 Timing GPS - time inserted Video with frame analysis Disappearance 05:59:05.02 Reappearance 05:59:06.50 Comments: Sun altitude -10deg, target just over 2 deg from 30% lit moon. The background was not completely dark and speckled as a result.