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A 14.6 second occultation was recorded by Diana Watson, using visual observing technique.
View the updated prediction.
Observers: 1 D Watson,Thornton, Whakatane, NZ 2(P) Prediction 21 July
Discussion:
The circle above is plotted at the expected 125 km diameter of Thia. With only one chord it is not possible to determine whether Diana was north or south of the central line of the event. However, assuming the result suggests that the chord might lie within 60km of the central portion of the asteroid.
Observational Data:
Observation details for MP (405) Thia By Star TYC 5709-01526-1 On 2007-08-18 at 12:56:30.0 _______________________________ Observer Diana Watson Location Thornton, Whakatane, NZ Longitude +176:51:50. Latitude -37:55:51. Altitude 3 m Datum Other Telelscope SCT including Cass and Mak Apperture 20 cm Seeing Slight flickering Thin cloud < 2 Timing Tape Recorder + time signal Visual, no PE applied Disappearance 11:58:36.80 Reappearance 11:58:51.40 Comments: Cloud from 11.48 to 11.52 just had a few quck peeks of the target star, Then cleared for rest of time, but there was moisture disturbance of the air. Brightness dipped, but could still see minor planet, timing from low brightness to full brightness.