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OCCULTATION OF TYC 6212-00414-1 BY 550 Senta
2007 September 11


Two positive occultations were recorded by Dave Gault, using video and GPS timing technique. One site was unattended. Steve Russell at a nearby site recorded a miss.

View the updated prediction.

Observers:
  1    D Gault,Hawkesbury Heights,NSW,AU  (Unattended)  
  2    D Gault,Tennyson,NSW,AU              
  3(M) S Russell,near Rouse Hill, NSW,AU    
  4(P) Predicted 14 Aug                     

Senta Site 1 - 2007 September 11

Senta Site 2 - 2007 September 11

Senta occultation - 2007 September 11

Discussion:

The ellipse above is plotted at the best fit approximation based on the constraint that the area of the ellipse should be similar to the predicted area of Senta with a 38km diameter circle. There are several possible solutions but the one chosen seems a reasonable approximation that fits Dave's two observations. As is so often the case, having more observations would help constrain the possibilities.

Video on Youtube of Dave's drift observation at site 1.

Observational Data:

Observation details for MP (550) Senta
By Star              TYC 6212-00414-1 
On 2007-09-11  at 10:58:50.0
_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights
Longitude  +150:38:27.8
Latitude   -33:39:52.
Altitude   286 m
Datum      WGS84
Telelscope Newtonian
Apperture   25 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  10:58:48.71
Reappearance   10:58:49.14
Comments: Station A -unattended video 

_______________________________

Observer   Dave Gault
Location   Tennyson
Longitude  +150:44:55.2
Latitude   -33:32:31.8
Altitude   90 m
Datum      WGS84
Telelscope SCT including Cass and Mak
Apperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  10:58:47.94
Reappearance   10:58:49.62
Comments: Station B -attended video 

_______________________________

Observer   Stephen Russell
Location   near Rouse Hill, NSW
Longitude  +150:53:0.4
Latitude   -33:38:24.3
Altitude   59 m
Datum      Other
Telelscope Newtonian
Apperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Altitude datum = MSL. WGS84 adjustment 20.5m 

Return to 2007 occultation results



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