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OCCULTATION OF UCAC2 41349474 BY 776 Berberica
2008 November 29


A 5.4 second occultation was recorded by Dave Gault, using video OSD technique.

View the updated prediction.

Observers:
  1    D Gault,Hawkesbury Heights,NSW, AU
  2(M) C Wyatt,Walcha, NSW, AU
  3(P) Prediction Nov 13

    

Berberica occultation - 2008 November 29

Discussion:

The circle above is plotted at the expected 151 km diameter of Berberica. With only one chord it is not possible to determine whether Dave was north or south of the central line of the event. Chris was observing visually and unusually in this event the MP was brighter than the star making the dip of only m 0.46 difficult to observe visually. While it appears likely that the updated prediction was approximately correct the plot is shown centered on Dave's chord as this gives the least error estimate.

The figure below shows the light curve of the occultation measured by Dave.

Berberica occultation - 2008 November 29

Observational Data:

Observation details for MP (776) Berbericia
By Star              UCAC2 41349474
On 2008-11-29  at 15:39:15.0
_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights
Longitude  +150:38:27.8
Latitude   -33:39:52.
Altitude   286 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  15:39:08.60
Reappearance   15:39:14.00
Comments: WAT-120N camera 8 frame stack.  Light curve attached.

_______________________________

Observer   Christopher G Wyatt
Location   Walcha, NSW
Longitude  +151:32:1.6
Latitude   -31:20:58.4
Altitude   1225 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Slight flickering Star faint
Timing     Tape Recorder + time signal Visual, no PE applied

Star & Asteroid separated:	15:49

Missed

Comments: The star was faint, and the asteroid brighter, an expected mag drop
of 0.46 mag was not detected visually at x266 using the 8" SCT @ f/10.
I was suitably located. The times of asteroid/star merging was not recorded,
but I did mention the approximate time when I started to see the asteroid and
star split. The time given is approximate.

    

Return to 2008 occultation results



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