A 12 second occultation was recorded by Brian Loader, using an SCT Telescope and Watec 910BD camera.

There was no updated prediction for this event.

Observers:
  1    B Loader, Darfield, Canterbury, New Zealand
     


       

Discussion:

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

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

Name:

Observational Data:

Observation details for MP ( 4946 ) Askalaphus
By Star              UCAC4 282-096184
On 2017-08-18  at 12:12:10.0

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Observer   B. Loader
Location   Darfield
Longitude  +172:06
Latitude   -43:28
Altitude   210 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Slight flickering Clear 
Camera Type  Watec 910BD    AAV-PAL       
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  12:10:00.52
Reappearance   12:10:12.42
Comments: GAIA prediction: combined mag 11.7, expected d mag 6.0.
 Event T max 21.9 sec, Pred time error 71s,  Prob of event 11% There were clear graze type events
during the second part of the occultation with two going above the 25% level.
 Tangra was unable to follow the event. Further notes in email.