A 5 second occultation was recorded by John Broughton, using video OSD technique.
No clearly observed misses were recorded for this event.
View the updated prediction.
Observers: 1 J Broughton,Reedy Creek, QLD, AU 2(P) Prediction, May 21
The ellipse above is plotted so that the longer axis fits the chord and the shorter is adjusted to give the same area as the expected circle of 100 km diameter. A 4 chord observation in Arizona on 05 Feb 2010 measured a dimension of 103 x 87 km. It would seem that Kolga has a very elongated potato shape. Sadly there is no ISAM or DAMIT 3D model for Kolga. With only one chord it is not possible to determine whether John was north or south of the central line of the event. However, the longer than expected chord of about 122 km would suggest that the chord might lie close to the central portion of the asteroid.
The figure below shows the Limovie light curve of the occultation.
Observation details for MP ( 191 ) Kolga By Star TYC 0292-00778-1 On 2014-07-18 at 10:03:20.0 _______________________________ Observer John Broughton Location Reedy Creek, QLD, AU Longitude +153:23 Latitude -28:06 Altitude 66 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 25 cm Seeing Steady Clear Camera Type WAT120N+ PAL/CCIR Camera Delay -0.07 Timing GPS - other linking Video with frame analysis Disappearance 10:03:12.98 Reappearance 10:03:17.94 Comments: