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OCCULTATION OF UCAC4 274-132026 BY 362 Havnia
2014 July 19


An 11 second occultation was recorded by Dave Gault, using video OSD technique.

One clearly observed miss was recorded for this event.

View the updated prediction.

Observers:
  1    D Gault,Kuriwa Observatory, NSW, AU  
  2(M) D Herald,Murrumbateman, NSW, AU      
  3(P) Prediction, TT14 28 June             


        

Havnia occultation__ 2014 July 19

Discussion:

The ellipse above is plotted at an arbitrary orientation to make the longer axis fit the chord and the shorter axis adjusted to give the same area as a circle with the same area as a circle with the expected 89 km diameter of Havnia.
With only one chord it is not possible to determine whether Dave was north or south of the central line of the event so the plot has been centered on the chord.
However, assuming the updated prediction was approximately correct the greater than expected length of the chord would suggest that the path might lie close to the central portion of the asteroid.

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

Havnia occultation__ 2014 July 19

Observational Data:


Observation details for MP ( 362 ) Havnia
By Star              UCAC4 274-132026
On 2014-07-19  at 13:19:44.0

_______________________________

Observer   Dave Gault
Location   Kuriwa Observatory, NSW, AU
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Steady Clear
Camera Type  Grasshopper Express with ADVS              ADVS
Camera Delay 0
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:19:26.75
Reappearance   13:19:37.78
Comments:  Lightcurve from 13:18:30 to 13:21:00 by Tangra v3.1.8
 using AperturePhotometry/BackgroundMedian.
Analysis by AOTA v4.1.1.3. 
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW, AU
Longitude  +148:59
Latitude   -34:57
Altitude   594 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   40 cm
Seeing     Steady Clear
Camera Type  WAT910BD       PAL/CCIR
Camera Delay -0.06
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:  Lightcurve from 13:18:31 to 13:21:00 by Tangra v3.1.8 
using AperturePhotometry/BackgroundMedian. 
Analysis by AOTA v4.1.1.4. 
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8


        

Return to 2014 occultation results



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