An 8 second occultation was recorded by John Broughton, using a Refractor Telescope and Watec 120N+ camera.

A 23 second occultation was recorded by John Broughton, using a Newtonian Telescope and LN-300-11673 camera.

A 14 second occultation was recorded by John Broughton, using a Refractor Telescope and Watec 120N+ camera.

An 8 second occultation was recorded by Tony Barry, using an SCT Telescope and Graashopper Express camera.

A 14 second occultation was recorded by Dave Gault, using an SCT Telescope and Watec 910BD camera.

2 misses were recorded for this event.

View the IOTA update.

Observers:
  1(M) S Kerr, Glenlee, Queensland, Australia              
  2(M) D Herald, Murrumbateman, New South Wales, Australia     
  3    J Broughton, Dalby, Queensland, Australia           
  4    J Broughton, Dalby, Queensland, Australia           
  5    J Broughton, Dalby, Queensland, Australia           
  6    D Gault, Hawkesbury Heights, New South Wales, Australia  
  7    T Barry, Penrith, Sydney, New South Wales, Australia     
  8(P) Prediction                           

       

Discussion:

The DAMIT model above is plotted at the expected diameter of Adelheid. The model has been plotted to fit the observed chords. The event appears to have been close to the predicted path.

The figures below show the Tangra light curve of the occultation.

Broughton 1:

Broughton 2:

Broughton 3:

Barry:

Gault:

Observational Data:

Observation details for MP ( 276 ) Adelheid
By Star              TYC 0036-00258-1 
On 2017-12-12  at 11:19:35.0

_______________________________

Observer   Tony Barry
Location   Penrith, Sydney
Longitude  +150:43
Latitude   -33:44
Altitude   52 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Slight flickering Clear 
Camera Type  Grasshopper Express with ADVS              NTSC/EIA      
Camera Delay 
Timing     GPS - time inserted Video, photo or photoelectric
Disappearance  11:19:27.73
Reappearance   11:19:36.06
Comments: Very slow reappearance.  Report prepopulated by IOTA Reporting Add-in for OW ver.1.9

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights, 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  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  11:19:23.71
Reappearance   11:19:38.91
Comments:  Lightcurve from 11:19:13 to 11:19:50 by Tangra v3.6.14 using
AperturePhotometry/AverageBackground. Analysis by AOTA v4.5.1.1.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.9

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW, Australia
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  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:  Lightcurve from 11:18:20 to 11:21:55 by Tangra v3.6.14 using
AperturePhotometry/AverageBackground. Analysis by AOTA v4.5.1.4.
Report prepopulated by IOTA Reporting Add-in for OW ver.1.9

_______________________________

Observer   Stephen Kerr
Location   Glenlee, QLD, AU
Longitude  +150:30
Latitude   -23:16
Altitude   50 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   30 cm
Seeing     Slight flickering Clear 
Camera Type  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.9

_______________________________

Observer   John Broughton
Location   Dalby, QLD, AU
Longitude  +151:20
Latitude   -27:12
Altitude   353 m
Datum      WGS84
Telescope Refractor
Aperture    8 cm
Seeing     Steady Clear 
Camera Type  Watec 120N+    PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis
Disappearance  11:17:24.63
Reappearance   11:17:52.79
Comments:     

_______________________________

Observer   John Broughton
Location   Dalby, QLD, AU
Longitude  +151:05
Latitude   -27:07
Altitude   329 m
Datum      WGS84
Telescope Newtonian
Aperture   25 cm
Seeing     Steady Clear 
Camera Type  LN-300-11673   PAL/CCIR      
Camera Delay 
Timing     GPS - other linking Video with frame analysis
Disappearance  11:17:25.52
Reappearance   11:17:49.12
Comments:     

_______________________________

Observer   John Broughton
Location   Dalby, QLD, AU
Longitude  +150:50
Latitude   -27:03
Altitude   365 m
Datum      WGS84
Telescope Refractor
Aperture   25 cm
Seeing     Steady Clear 
Camera Type  Watec 120N+    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  11:17:31.64
Reappearance   11:17:48.12
Comments: