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OCCULTATION OF TYC 7439-00302-1 BY (356) LIGURIA
2005 JULY 17


This occultation was recorded on video by Dave Gault in Hawkesbury Heights, NSW. As such the path must have shifted at least one path width to the north.

View the updated prediction.

Observers:
  1    D. Gault, Hawkesbury Hts, Australia  
  2(M) D. Higgins, Ngunnawal, ACT, Australia
  3(M) D. Herald, Woden, ACT, Australia     
M = Miss

Liguria occultation - 2005 July 17

Plot showing Dave Gault's chord, the relative positions of Higgins and Herald, and a circle of the assumed 131 km diameter of Liguria.

Observational Data:

Observer's Name                  : Dave Gault
Aperture (cm)			 : 25
Focal length (cm)		 : 122
Type (e.g. SCT; Newtonian)	 : EQ Newtonian
Magnification			 : video camera
Observing site name		 : Dave's Skyshed
Longitude (East +ve)		 : 150 38.4637
Latitude (South -ve)		 : -33 39.8663
Height above Sealevel (metres)	 : 286
Geodetic & Height Datums	 : WGS84 and MSL
Sky Transparency (Delete two)	 : fair
Star Image Stability (Delete two): fair
Other Conditions:		 : wind, moonlight twilight, Sydney skyglow, 7.6degC
Time Source (e.g. WWV, VNG)	 : GPS
Recording method (e.g. tape)	 : KIWI
Could you see the Asteroid?	 : Yes
Approx. Limiting Magnitude	 : 13.0
                                          | Estimated  |
                           Universal Time | Reaction   | Accuracy, Remarks
                              h  m  s     | Time (sec) | 
Started Observing	   : 09:00
Star and Object Merged	   : 09:09
Disappearance At	   : 09:16:42.041 |  0	       | 0.008	   | difficult seeing
Reappearance At		   : 09:16:49.965 |  0	       | 0.008	   | ditto
Star and Object Separated  : 09:23
Stopped Observing	   : 09:25
Was your PE subtracted from 
any of the above timings?  : NA    

ADDITIONAL COMMENTS:
The target star was at an altitude of 30 degrees placing it in the Sydney skyglow and I took ages to star hop to the star. I could not see (visually) the target star and I could only just make out the nearby mag. 10.3 star however the camera could easily reach mag 13.  It was gratifying to see the asteroid appulse the star, confirming my navigation.   It was even more gratifying to obtain a positive observation of duration 7.924 seconds.   This would mean the path shifted at least 1 pathwidth north of the prediction.


Observer's Name                  : David Higgins
Aperture (cm)                    : 35.5
Focal length (cm)                : 
Type (e.g. SCT; Newtonian)       : SCT
Magnification                    : n/a
Observing site name              : E14 Hunters Hill
Longitude (DD MM SS ; East +ve)  : 149 06 35.6
Latitude (DD MM SS ; South -ve)  : -35 09 44.6
Height above Sealevel (metres)   : 655
Geodetic Datum (e.g.WGS84,NZ1949): WGS84
Height Datum (if known)          : 
Sky Transparency (Delete two)    : Good
Star Image Stability (Delete two): Fair
Other Conditions:  
     (Wind, Clouds, Lights, etc.): Windy, 78% illuminated moon
Time Source (e.g. WWVH, GPS)     : GPS (not a 1pps source)
Recording method (e.g. tape)     : CCD Drift
Could you see the Asteroid?      : No
Approx. Limiting Magnitude       : 15
                                          | Estimated  |
                           Universal Time | Reaction   | Accuracy, Remarks
                              h  m  s     | Time (sec) | 
Started Observing          : 09:16:00.0	       0.1       Manually triggered shutter
Star and Object Merged     : not observed
Disappearance At           : not observed
Estimated Closest Approach : not observed
Reappearance At            : not observed
Star and Object Separated  : not observed
Stopped Observing          : 09:17:30.0        0.1       Manually triggered shutter

Was your reaction time (also known as Personal Equation) subtracted from 
any of the above timings?  : No

ADDITIONAL COMMENTS: CCD Drift scan.  No break observed in star trail

Observer's Name                  : Dave Herald
No Event

Return to 2005 occultation results



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