A 6 second occultation was recorded by Dave Herald, using an SCT Telescope and Watec 910BD camera.

An 8 second occultation was recorded by John Newman, using an SCT Telescope and Watec 910BD camera.

View the IOTA update.

Observers:
  1    D Herald, Murrumbateman, New South Wales, Australia
  2    J Newman, Canberra, Australian Capital Territory, Australia
  3(P) Prediction- IOTA Feed                

         



       

Discussion:

The ellipse above is plotted at the expected diameters of Marianna. The ellipse has been plotted to fit the observed chords. The event appears to have been north of the predicted path.

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

Herald:

Newman:

Observational Data:

Observation details for MP ( 602 ) Marianna
By Star              UCAC4 262-184835
On 2017-07-17  at 10:06:54.0

_______________________________

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
Disappearance  10:06:41.98
Reappearance   10:06:47.80
Comments: Mag drop 0.28  Report prepopulated by IOTA Reporting Add-in for OW ver.1.8

_______________________________

Observer   John Newman
Location   Canberra
Longitude  +149:02
Latitude   -35:11
Altitude   657 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   41 cm
Seeing     Slight flickering Thin cloud < 2 
Camera Type  Watec 910BD    PAL/CCIR      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  10:06:39.01
Reappearance   10:06:47.49
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.8