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OCCULTATION OF UCAC2 18781867 BY 691 Lehigh
2012 August 12


A 2.3 second occultation was recorded by Jonathan Bradshaw, using video OSD technique.

One clearly observed miss was recorded for this event.

View the TT14 prediction.

Observers:
  1(M) W Hanna,Alice Springs,NT, Australia
  2    J Bradshaw,Samford Valley, Qld, AU
  3(P) Prediction, TT14,  27 July


        

Lehigh occultation - 2012 August 12

Discussion:

The circle above is plotted at the expected 86 km diameter of Lehigh. With only one chord it is not possible to determine whether Jonathan was north or south of the central line of the event.

The figure below shows the Limovie/Tangra light curve of the occultation.

Lehigh occultation - 2012 August 12

Observational Data:

Observation details for MP ( 691 ) Lehigh
By Star              UCAC2 18781867
On 2012-08-12  at 10:52:03.0

_______________________________

Observer   William Hanna
Location   Alice Springs, Australia
Longitude  +133:53
Latitude   -23:42
Altitude   581 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.35
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: While getting ready to start recording I believe I saw the star "blink out"
on the screen for about a second at about 10:48:57, but I can't confirm this.

_______________________________

Observer   Jonathan Bradshaw
Location   Samford Valley, Qld, Australia
Longitude  +152:50
Latitude   -27:22
Altitude   80 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   36 cm
Seeing     Steady Clear
Camera Type  G-Star         PAL/CCIR
Camera Delay 0.14
Timing     GPS - time inserted Video with frame analysis
Disappearance  10:47:38.41
Reappearance   10:47:40.71
Comments: Rather unexpected treat. 45 seconds early and well into 2 sigma


        

Return to 2012 occultation results



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