Just 2 days after an observation of the same object a 12.59 second occultation was recorded again by Dave Herald from the same location, using video OSD technique. I am not sure if this is a record, but certainly unusual.

One clearly observed miss was recorded for this event.

View the updated prediction.

Observers:
  1    D Herald,Murrumbateman, NSW, AU
  2(M) D Gault,Kuriwa Observatory, NSW, AU
  3(P) Prediction, 7 Jan



        

Discussion:

The ellipse above is plotted at the maximum axis ratio of 1:1.10 as determined by lightcurve inversion data. With only one chord we would normally assume the best esimate of the objects position was on the observed chord.
In this case we have Dave Gaults miss as a constraining observation.
Clearly as shown in the first plot this would force a greater Axis ratio.
So it seems reasonable to assume that the second plot with Nemausa on the south side of the plot is the better model. Sadly there is no ISAM or DAMIT model to be sure of the actual orientation at the time of the object. However changing the orientation of the ellipse or treating Nemausa as a circle makes almost no difference in the position of the centre of the object.

The figure below shows the Tangra light curve of the occultation with analysis using the AOTA tool in Occult.

Observational Data:

Observation details for MP ( 51 ) Nemausa
By Star              UCAC2 34249045
On 2014-01-14  at 10:58:55.0

_______________________________

Observer   Dave Gault
Location   Kuriwa Observatory, 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  Grasshopper Express with ADVS              ADVS
Camera Delay 0
Timing     GPS - time inserted Video with frame analysis

Missed

Comments:

_______________________________

Observer   Dave Herald
Location   Murrumbateman, NSW, AU
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  WAT120N+       PAL/CCIR
Camera Delay -0.05
Timing     GPS - time inserted Video with frame analysis
Disappearance  10:59:00.58
Reappearance   10:59:13.17
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.8