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OCCULTATION OF UCAC4 342-122889 BY 284 Amalia
2016 April 5

A 2.8 second occultation was recorded by Brian Loader from Darfield on the South Island of New Zealand. This observation was based on a personal prediction and no other reports were received.

View a prediction here.

  1    B Loader,Darfield                    
  2(P) Prediction


Amalia occultation__ 2016 April 5


The circle above is plotted at the expected 53 km diameter of (284) Amalia. With only one chord it is not possible to determine whether Brian was north or south of the central line of the event so the circle has been plotted centrally on the observed chord .

This was a very shallow occultation - a small drop in observed magnitude. The timings have been derived from AOTA (module in Occult). The figure below shows the Tangra light curve of the occultation.

Amalia  occultation__ 2016 April 5

Observational Data:

Observation details for MP ( 284 ) Amelia
By Star              UCAC4 342-122889
On 2016-04-05  at 13:01:39.0


Observer   Brian Loader
Location   Darfield
Longitude  +172:06
Latitude   -43:28
Altitude   207 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   25 cm
Seeing     Strong flickering Clear 
Camera Type  Watec 910BD    AAV-PAL       
Camera Delay 
Timing     GPS - time inserted Video with frame analysis
Disappearance  13:01:34.12
Reappearance   13:01:37.00
Comments: Occult Prediction: combined mag 13.3, expected d mag 0.36 (28%), Event T max 3.7 sec, Pred time error 6s,  Prob of event 23%  


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