A 4 second occultation was recorded by Peter Graham, using video OSD technique.
One partial cloud affected miss was recorded for this event.
View the updated prediction.
Observers: 1 D Gault,bservatory, N.S.W., Australia 2 P Graham,Martinborough New Zealand 3(P) Prediction, TT13 May 29
The circle above is plotted at the expected 48 km diameter of Brunhild. With only one chord it is not possible to determine whether Peter was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the close to maximum chord of about 50km would suggest that the chord might lie close to the central portion of the asteroid.
The figure below shows Peter's Tangra light curve of the occultation.
The figure below shows Dave's cloud affected Tangra light curve of the occultation.
Note that both the target and refewrence drop at he same time indicating that this is cloud effect rather than an occultation. Also if we accept that Peter's event is real then Dave is sufficiently far away for us to be sure this is a Miss.
Observation details for MP ( 123 ) Brunhild By Star UCAC4 306-240097 On 2013-06-14 at 09:45:50.0 _______________________________ Observer Dave Gault Location Kuriwa Observatory, N.S.W., Australia Longitude +150:38 Latitude -33:39 Altitude 286 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 30 cm Seeing Slight flickering Thin cloud < 2 Camera Type ADVS ADVS Camera Delay 0 Timing GPS - time inserted Visual, PE applied Disappearance 09:45:43.13 Reappearance 00:00:00.00 Comments: Observed D only but it looks like cloud. R lost in cloud _______________________________ Observer Peter Graham Location Martinborough New Zealand Longitude +175:29 Latitude -41:14 Altitude 73 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 25 cm Seeing Slight flickering Clear Camera Type WAT120N+ PAL/CCIR Camera Delay 0.19 Timing GPS - time inserted Video with frame analysis Disappearance 09:43:57.67 Reappearance 09:44:01.67 Comments: foggy in Martinborough but clear but very damp conditions at home. Exposure timing inadvertently not noted but Tangra reports video intergration as 16 with high confidence.