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OCCULTATION OF UCAC2 30546389 BY 97 Klotho
2008 March 10


A 3.8 second occultation was recorded by Hristo Pavlov, and a 10.3 second obervation by Dave Gault, both using video technique.

View the prediction from TransTasman faint star list.

Observers:
  1    D Gault,Hawkesbury Heights, NSW, AU  
  2    H Pavlov,Marsfield, NSW, AU          
  3(M) J Broughton,Creek,Reedy Creek, QLD,AU
  4(P) Predicted, 0803TT,17 Feb             


Klotho occultation - 2008 March 10

Discussion:

The ellipse above is a best fit to the chords with the constraint that the ellipse have the same area as the expected 80 km diameter of Klotho. The path is approximately 180 km West of the predicted line.

The figures below shows the Limovie image of the occultation from Hristo's observation which even hints at the possibility of a "flash" in the middle.

Klotho occultation - 2008 March 10

Observational Data:

Observation details for MP (97) Klotho
By Star              UCAC2 30546389
On 2008-03-10  at 13:07:52.0
_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights, NSW, AU
Longitude  +150:38:27.8
Latitude   -33:39:52.
Altitude   286 m
Datum      WGS84
Telelscope SCT including Cass and Mak
Apperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:07:48.10
Reappearance   13:07:58.40
Comments:  Integration of 32 frames								

_______________________________

Observer   Hristo Pavlov
Location   Marsfield, NSW, AU
Longitude  +151:06:11.4
Latitude   -33:46:13.5
Altitude   105 m
Datum      WGS84
Telelscope SCT including Cass and Mak
Apperture   20 cm
Seeing     Steady Clear
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:07:49.10
Reappearance   13:07:52.90

Comments: I noticed a possible drop visually on the screen. Then when I analysed the video I wasn't convinced enough that there was an occultation but when Dave Gault reported that he had a 12 sec event I checked my video again. After an hour and a half of measurements with different cursor appertures I finally got convinced that the noticable intensity drop is caused by an occultation. The drop was only 0.4m. Light curves attached. Camera used: WAT 120N+ with integration level 6 which corresponds to 32 frames. _______________________________ Observer John Broughton Location Reedy Creek, QLD,AU Longitude +153:23:52.8 Latitude -28:06:30.3 Altitude 66 m Datum ,NZ1949) : WGS84 Telelscope SCT Apperture 25 cm Seeing Steady Clear Timing Tape Recorder + time signal + shutter Drift scan Missed Comments: : No Occultation

Return to 2008 occultation results



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