A 4.56 second occultation was recorded by Dave Herald, using video OSD technique.

A reappearance only was observed by Ivan Curtis using Drift Scan tecnique but unforuneately missed the Disappearance.

View the updated prediction.

Observers:
  1    D Herald,Kambah, ACT,AU
  2    I Curtis,Vale Park, Adelaide, SA,AU
  3(M) D Gault,Hawkesbury Heights,NSW,AU
  4(M) S Quirk,Mudgee,NSW,AU
  5(P) Prediction 19 Nov IOTA

    

Discussion:

The circle above is plotted at the expected 137 km diameter of Aurelia. The constraint of Dave Gault's miss forces the fit to be rather poor.
If an ellipse as below is drawn with axis ratio set to maxcimum 1.28 predicted from light curve data it tends to force the size down but a reasonable fit can be obtained.

With 1 and half chords and nearby miss we can be fairly confident of the path of Aurelia and that it was south of the predicted line.

The figure below shows Dave Herald's Tangra light curve of the occultation.

Observational Data:

Observation details for MP (419) Aurelia
By Star              UCAC2 38755148
On 2011-01-08  at 12:53:35.0

_______________________________

Observer   Ivan Curtis/Tina Curtis
Location   Vale Park, Adelaide, SA,AU
Longitude  +138:37
Latitude   -34:53
Altitude   44 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   24 cm
Seeing     Slight flickering Broken cloud
Camera Type
Camera Delay
Timing     other Drift scan
Disappearance  not measured
Reappearance   12:53:37.00
Comments: Disappearance was already under way at the beginning of drift exposure,
which was started at 12:53:34 +/- 0.5s
Timing was extracted from FITS image header of drift image.
Imaging PC is running Windows XP, and was synced to internet time server prior
to image capture. FITS header has time to resolution of 1 second.

_______________________________

Observer   Dave Gault
Location   Hawkesbury Heights,NSW,AU
Longitude  +150:38
Latitude   -33:39
Altitude   286 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   20 cm
Seeing     Steady Thick cloud > 2
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: Clouded at 12:51:18 - exactly one minute before predicted time.
No event up till this time Cleared at 12:52:39  - No event seen until…
Clouded at 12:53:10 - remained clouded thereafter

_______________________________

Observer   Steve Quirk
Location   Mudgee,NSW,AU
Longitude  +149:39
Latitude   -32:27
Altitude   508 m
Datum
Telescope Newtonian
Aperture   32 cm
Seeing     Slight flickering Clear
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis

Missed

Comments: no drop seen in Limovie graph

_______________________________

Observer   Dave Herald
Location   Kambah, ACT,AU
Longitude  +149:03
Latitude   -35:23
Altitude   582 m
Datum      WGS84
Telescope SCT including Cass and Mak
Aperture   35 cm
Seeing     Slight flickering Clear
Camera Type
Camera Delay
Timing     GPS - time inserted Video with frame analysis
Disappearance  12:52:26.71
Reappearance   12:52:31.27
Comments:   Report prepopulated by IOTA Reporting Add-in for OW ver.1.5