A 3.5 second occultation was recorded by Dave Herald, using an SCT Telescope and Watec 910BD camera.

View the IOTA update.

Observers:
Insert Observer list here
  1    D Herald, Murrumbateman, New South Wales, Australia

       

Discussion:

The circle above is plotted at the expected diameter of Katja. With only one chord, it is not possible to tell if Dave was north or south of the centre line of the event. The model has been plotted centred on the observed chord.

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

Name:

Observational Data:

Observation details for MP ( 1113 ) Katja
By Star              UCAC4 64927800
On 2018-01-05  at 13:48:43.0

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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     Strong flickering Clear 
Camera Type  Watec 910BD    NTSC/EIA      
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:48:08.71
Reappearance   13:48:12.23
Comments: Definite event of right mag drop (0.4)  Report prepopulated by IOTA Reporting Add-in for OW ver.1.9