Three chords were recorded , using video OSD technique.

One clearly observed miss was recorded for this event.

View the updated prediction.

Observers:

  1    D Lowe,Brissbane,  Queensland,  AU
  2    J Bradshaw,Samford Valley, Qld, AU
  3    J Broughton,Gunalda, QLD, AU
  4(M) J Broughton,Bundaberg, QLD, AU
  5(P) Prediction, 12 June


        

Discussion:

The ellipse above is plotted at the best fit axis ratio as determined by Occult. With 3 chords we can be confident of the path of Hygiea and that it was south of the predicted line. The two ISAM 3D models have been overlaid on the measured ellipse and both show good fit making it difficult to determine which of the two 3D sdolutions is the better fit despite having 3 good chords.

The figure below shows the Tangra light curve of Dennis Lowe's occultation.

The figure below shows the Limovie/Tangra light curve of Jonathan Bradshaw's occultation.

The figure below shows the Limovie light curve of John Broughton's occultation.

Observational Data:

Observation details for MP ( 10 ) Hygiea
By Star              TYC 1219-00304-1
On 2013-08-10  at 17:09:00.0

_______________________________

Observer   Dennis Lowe
Location   Brisbane,  Queensland,  Australia
Longitude  +153:12
Latitude   -27:43
Altitude   39 m
Datum      WGS84
Telescope Refractor
Aperture   10 cm
Seeing     Slight flickering Broken cloud
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.19
Timing     GPS - time inserted Video with frame analysis
Disappearance  17:09:36.96
Reappearance   17:10:15.00
Comments: The light curve shows the star emerging from cloud a few seconds before the occultation.

_______________________________

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 Thin cloud < 2
Camera Type  G-Star         PAL/CCIR
Camera Delay 0.04
Timing     GPS - time inserted Video with frame analysis
Disappearance  17:09:35.67
Reappearance   17:10:12.67
Comments: Nice result from a long anticipated event.
High cloud dimmed the star, but was very even and didin't marr the event

_______________________________

Observer   John Broughton
Location   Gunalda, QLD, AU
Longitude  +152:37
Latitude   -25:58
Altitude   112 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture    9 cm
Seeing     Steady Clear
Camera Type  LN-300-11673   PAL/CCIR
Camera Delay -0.8
Timing     GPS - other linking Video with frame analysis
Disappearance  17:09:42.23
Reappearance   17:10:06.87
Comments:

_______________________________

Observer   John Broughton
Location   Bundaberg, QLD, AU
Longitude  +152:12
Latitude   -25:02
Altitude   78 m
Datum      WGS84
Telescope Newtonian
Aperture   32 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay 0.05
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: