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


        

Discussion:

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.

Observational Data:

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.