A 7.0 second occultation was recorded by Bill Allen, using CCD dsrift scan technique.

View the updated prediction.

Observers:
  1    B Allen,Blenheim, NZ
  2(M) B Loader,Darfield
  3(P) Prediction 11 June

    

Discussion:

The circle above is plotted at the expected 77 km diameter of Klytaemnestra. With only one chord it is not possible to determine whether Bill was north or south of the central line of the event. However, assuming the updated prediction was approximately correct the chord of about 71 km would suggest that the chord might lie within 20km of the central portion of the asteroid.

The figure below shows the drift-scan image of the occultation.

Observational Data:

Observation details for MP (179) Klytaemnestra
By Star              UCAC2 25880613
On 2009-06-19  at 10:54:18.0
_______________________________

Observer   Bill Allen
Location   Blenheim, NZ
Longitude  +173:50:21.4
Latitude   -41:29:30.
Altitude   38 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Clear
Timing     Tape Recorder + time signal Drift scan
Disappearance  10:54:00.50
Reappearance   10:54:07.50
Comments: Very good observing conditions temp 1.3, no wind.
Updated report attached. I have re-examined the original scan
and adjacent scans ( at the same time) and do not have the same change
in intensity. Unfortunately the very low signal level did not allow
a plot of intensity verses pixel.
_______________________________

Observer   B. Loader
Location   Darfield
Longitude  +172:06:24.
Latitude   -43:28:53.
Altitude   210 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Steady Broken cloud
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Watec canera at 16x integration.
Cloud cover cleared less than 10 minutes before event.
Some cloud  remanants evident in  light curve.