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OCCULTATION OF UCAC4 317-111666 BY 28978 Ixion
2014 June 24

A 9 second occultation was recorded by Bill Hanna, using ADVS video technique.

Two clearly observed miss were recorded for this event.
the first prediction showed the path t othe south of Australia

View the Jan 2011 prediction.
But a later one just a few weeks before the event was much more accurate and clearly close to the path.

View the 2 Jun 2014 prediction.

  1(M) J Milner,Glen Forrest, WA, AU        
  2    W Hanna,Alice Springs, Australia     
  3(P) RIO Prediction, Jan 2011             


Ixion occultation__ 2014 June 24


The circle above is plotted at the expected 804 km diameter of Ixion. With only one chord it is not possible to determine whether Bill was north or south of the central line of the event.

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

Ixion occultation__ 2014 June 24

There has been some discussion about how to interpret the two non zero points at the bottom of the lightcurve. This could indicate a double star but it is cataloged at M 15.5, so if this is a companion it is very dim, and there is not enough data to be able to confirm this conjecture.

Observational Data:

Observation details for MP ( 28978 ) Ixion
By Star              UCAC4 317-111666
On 2014-06-24  at 14:56:59.0


Observer   Jacquie Milner
Location   Glen Forrest, WA, AU
Longitude  +116:05
Latitude   -31:54
Altitude   260 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Slight flickering Clear
Camera Type  Mintron 12V1C-EX             PAL/CCIR
Camera Delay -0.94
Timing     GPS - time inserted Video with frame analysis




Observer   William Hanna
Location   Alice Springs, Australia
Longitude  +133:53
Latitude   -23:42
Altitude   584 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Camera Type  Grasshopper Express with ADVS              ADVS
Camera Delay 0
Timing     GPS - time inserted Video with frame analysis
Disappearance  14:54:46.22
Reappearance   14:54:55.22
Comments: gamma 1.0, gain 29dB calm, 8C 


Return to 2014 occultation results

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