A Four Positive chords and 5 misses were recorded for this event.

View the updated prediction.

Observers:
  1(M) J Newman,Flynn, ACT, AU              
  2(M) D Gault,Kuriwa Observatory, NSW, AU  
  3(M) D Herald,Murrumbateman, NSW, AU      
  4(M) D Herald,Boorowa, NSW                
  5    S Quirk,Mudgee, NSW, AU              
  6    C Wyatt,Walcha, NSW, Australia       
  7    J Broughton,Ballina, NSW, AU         
  8    J Broughton,Brunswick Heads, NSW, AU 
  9(M) J Broughton,Reedy Creek, QLD, AU     
 10(P) Prediction, 19 Sep                   




        

Discussion:

The ellipse above is plotted at the best fit axis ratio as determined by Occult. With 4 chords we can be confident of the path of Henrietta and that it was north of the predicted line. Sadly there is no DAMIT or ISAM model for Henrietta

The figure below shows Steve Quirk's Limovielight curve of the occultation.

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

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

Chris Wyatt made a visual observation

Observational Data:

Observation details for MP ( 225 ) Henrietta
By Star              UCAC2 33162747
On 2014-10-28  at 12:18:48.0

_______________________________

Observer   John Broughton
Location   Brunswick Heads, NSW, AU
Longitude  +153:32
Latitude   -28:32
Altitude   5 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear
Camera Type  LN-300-11673   PAL/CCIR
Camera Delay -0.4
Timing     GPS - other linking Video with frame analysis
Disappearance  12:18:45.21
Reappearance   12:18:48.57
Comments:   

_______________________________

Observer   John Broughton
Location   Ballina, NSW, AU
Longitude  +153:32
Latitude   -28:50
Altitude   3 m
Datum      WGS84
Telescope Newtonian
Aperture   32 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.11
Timing     GPS - other linking Video with frame analysis
Disappearance  12:18:44.93
Reappearance   12:18:51.81
Comments:   

_______________________________

Observer   Steve Quirk
Location   Mudgee, NSW, AU
Longitude  +149:39
Latitude   -32:27
Altitude   508 m
Datum      
Telescope Newtonian
Aperture   32 cm
Seeing     Strong flickering Clear
Camera Type   
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  12:19:15.44
Reappearance   12:19:23.23
Comments: seeing worse for reappearance, see attached graphs for comment  

_______________________________

Observer   John Broughton
Location   Reedy Creek, QLD, AU
Longitude  +153:23
Latitude   -28:06
Altitude   66 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear
Camera Type  LN-300-11673   PAL/CCIR
Camera Delay -0.4
Timing     GPS - other linking Video with frame analysis

Missed

Comments:   

_______________________________

Observer   Chris Wyatt
Location   Walcha, NSW, Australia
Longitude  +151:34
Latitude   -30:58
Altitude   1076 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Slight flickering Clear
Camera Type  Visual         Other
Camera Delay 0
Timing     Tape Recorder + time signal Visual, no PE applied
Disappearance  12:19:02.76
Reappearance   12:19:10.36
Comments: Cool, clear conditions, 
Asteroid was visible but unsure when the star/asteroid merged before Disappearance.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.7

{ -1 sec adjustment made to align Chris' chord with Steve's nearby video - OSD chord.  - JT}
_______________________________

Observer   Dave Herald
Location   Boorowa, NSW
Longitude  +148:36
Latitude   -34:23
Altitude   560 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Clear
Camera Type  WAT120N+       PAL/CCIR
Camera Delay -0.11
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:  Lightcurve from 12:18:47 to 12:20:21 by Tangra v3.1.11 
using AperturePhotometry/BackgroundMedian. Analysis by AOTA v4.1.2.2. 
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 12:19:05 to 12:20:00 by Tangra v3.1.11 
using AperturePhotometry/BackgroundMedian. 
Analysis by AOTA v4.1.2.2. 
Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   John Newman
Location   Flynn, ACT, AU
Longitude  +149:02
Latitude   -35:11
Altitude   657 m
Datum      WGS84
Telescope other - specify below
Aperture   41 cm
Seeing     Slight flickering Clear
Camera Type  WAT120N+       NTSC/EIA
Camera Delay -0.159
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

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

Missed

Comments: